Played as the inaugural Transamerica Senior Golf Championship (Oct 19-22). Second-placed Al Geiberger (USA) finished 3 shots behind Casper (USA), who recorded the last of his nine Snr PGA Tour victories. [South course, Silverado Resort, Napa, California].

Played as the Mazda Senior Tournament Players Championship (June 9-12). Second-placed Al Geiberger (USA) finished 2 shots behind Casper (USA). [Stadium Course, TPC Sawgrass, Ponte Vedra Beach, FL].

Played as the Vantage at the Dominion. Second-placed Chi Chi Rodriguez (PR/USA) finished 1 shot behind Casper (USA). [Dominion CC, San Antonio, Texas].

Played as the Del E. Webb Arizona Classic (March 13-15; formerly Senior PGA Tour Roundup). Second-placed Bob Charles (NZ) and Dale Douglass (USA) finished 5 shots behind Casper (USA). [Hillcrest GC, Sun City West, Phoenix, AZ].

Played as the Greater Grand Rapids Open. Second-placed Miller Barber (USA) finished 3 shots behind Casper (USA). [The Highlands GC, Grand Rapids, Michigan; at the time known as Elks CC].

Played as the Unionmutual Seniors Golf Classic (Sept 27-29; unofficial seniors invitational event). Second-placed Orville Moody (USA) finished 2 shots behind Casper (USA). [Purpoodock Club, Cape Elizabeth, nr Portland, Maine].

Played as the inaugural Senior PGA Tour Roundup (April 20-22). Second-placed Bob Stone (USA) finished 2 shots behind Casper (USA). [Hillcrest GC, Sun City West, Phoenix, AZ].

Played as the Liberty Mutual Legends of Golf (unofficial two-man better-ball team event). Second-placed Miller Barber (USA) & Julius Boros (USA) finished 3 shots behind Billy Casper (USA) & Gay Brewer (USA). [Onion Creek Club, Austin, Texas].

The US Senior Open (July 22-25). Casper (USA) beat Rod Funseth (USA) with a birdie at the first sudden-death playoff hole, which followed an 18-hole playoff in which both players shot 75 (+4). [Hazeltine National GC, Chaska, Minn.].

Played as the Merrill Lynch/Golf Digest Commemorative Pro-Am. Casper (USA) beat Bob Toski (USA) with a birdie at the fourth playoff hole. [Newport CC, Newport, Rhode Island].

Played as the inaugural Shootout at Jeremy Ranch. Second-placed Miller Barber (USA) and Don January (USA) finished 1 shot behind first-time US Snr Tr winner Casper (USA). [Jeremy Ranch G&CC, Park City, nr Salt Lake City, Utah].

Played as the Mexican Open (Abierto Mexicano de Golf) (for the last time until 1980). Seve Ballesteros (Esp) finished in second place behind Casper (USA). [CC Chiluca, Ciudad López Mateos, nr Mexico City].

Played as the First NBC New Orleans Open (May 15-18). Second-placed Peter Oosterhuis (Eng) finished 2 shots behind Billy Casper (USA), who recorded the last of his 51 PGA Tour wins. [Lakewood GC, New Orleans, LA].

Played as the Hassan II Trophy (unofficial limited-field event). Tommy Aaron (USA) finished in second place behind Casper (USA), who won this event for the second time in three years. [Red course, Royal Golf Dar Es Salam, Rabat, Morocco].

Played as the Italian Open. Second-placed Brian Barnes (Scot) finished 1 shot behind Casper (USA), who recorded his first (and only) win in an official European Tour event (Casper also won the unofficial Trophee Lancome in 1974). [Red course, GC Monticello, Cassina Rizzardi, nr Como].

Played as the Trophee Lancome. Won by Billy Casper (USA). [Golf de Saint-Nom-La-Bretèche, nr Paris, France].

Played as the Hassan II Trophy (Dec 6-9; unofficial limited-field event). Second-placed Rod Funseth (USA) finished 5 shots behind Casper (USA). [Red course, Royal Golf Dar Es Salam, Rabat, Morocco].

Played as the Sammy Davis Jr. Greater Hartford Open (Aug 31-Sep 3). Second-placed Bruce Devlin (Aus) finished 1 shot behind Billy Casper (USA). This was the last of Casper's four wins in this event, and his 50th PGA Tour win overall. Monday Labour Day finish. [Wethersfield CC, nr Hartford, CT].

Played as the Western Open (June 28-July 1). Second-placed Larry Hinson (USA) and Hale Irwin (USA) finished 1 shot behind Billy Casper (USA), who recorded the last of his four wins in this event. [Midlothian CC, Midlothian, nr Chicago, IL].

Played as the Kaiser International Open Invitational (Oct 21-24). Second-placed Fred Marti (USA) finished 4 shots behind Billy Casper (USA). [North course, Silverado Resort, Napa, CA].

Played as the inaugural United States-Japan Golf Match (Nov 5-7; Japan Tr event; individual low score winner). Bert Yancey (USA) finished in third place behind Billy Casper (USA) and Masashi "Jumbo" Ozaki (Jpn), who tied for first place. Casper recorded his first and only professional circuit win in Japan. [Perfect Liberty CC, Osaka, Japan].

The Masters Tournament (34th) (April 9-13). Casper (USA) beat Gene Littler (USA) in an 18-hole playoff: Casper 69 (-3), Littler 74 (+2). Casper won the title he narrowly missed out on the year before. [Augusta National GC, Augusta, GA].

Played as the AVCO Golf Classic (Aug 21-24). Second-placed Rod Funseth (USA) and Tom Weiskopf (USA) finished 1 shot behind Billy Casper (USA). Monday finish required after Sunday's final round was rained out. [Pleasant Valley CC, Sutton, MA].

Played as the IVB Philadelphia Golf Classic (July 16-19). Second-placed Terry Wilcox (USA) finished 3 shots behind Billy Casper (USA). [Whitemarsh Valley CC, Lafayette Hill, nr Philadelphia, PA].

Played as the Los Angeles Open (Jan 8-11; PGA Tour season-opener). Casper (USA) beat Hale Irwin (USA) with a birdie at the first playoff hole. [Rancho Park GC, Los Angeles, CA].

Casper (USA) won his second PGA of America Player of the Year Award (based on points allocated for PGA Tour wins, money-list position and scoring average).

Played as the Western Open (July 5-8). Second-placed Rocky Thompson (USA) finished 4 shots behind Billy Casper (USA), who recorded the third of his four wins in this event. [Midlothian CC, Midlothian, nr Chicago, IL].

Played as the Alcan Golfer of the Year Championship (Sept 25-28; PGA Tour event). Second-placed Lee Trevino (USA) finished 1 shot behind Billy Casper (USA). [Portland GC, Portland, OR]. Note: of the four Alcan Golfer of the Year events, this is the only one played in the USA. The 1967, '68 & '70 editions were played in the British Isles.

Played as the Bob Hope Desert Classic (Feb 5-9). Second-placed Dave Hill (USA) finished 3 shots behind Casper (USA). [Indian Wells CC, Coachella Valley, CA. Earlier rounds also at: Bermuda Dunes CC; Tamarisk CC; La Quinta CC].

Played as the Greater Hartford Open Invitational (Sept 5-8). Second-placed Bruce Crampton (Aus) finished 3 shots behind Billy Casper (USA). This was the third of Casper's four wins in this event. [Wethersfield CC, nr Hartford, CT].

Played as the "500" Festival Open Invitational (June 6-9; held in conjunction with the Indy 500 race week). Second-placed Mike Hill (USA) and defending champion Frank Beard (USA) finished 1 shot behind Billy Casper (USA), who won this event for the second time in three years, and third time in total. [Brickyard Crossing GC, at the time known as Speedway GC, Indianapolis, IN].

Played as the Colonial National Invitation (May 16-19). Second-placed Gene Littler (USA) finished 5 shots behind Billy Casper (USA), who won this event for the second time. [Colonial CC, Ft Worth, TX].

Casper (USA) won his second PGA Tour leading money winner title, with 1968 season earnings of $205,168 on the Tour. Jack Nicklaus (USA) was second with $155,285; Tom Weiskopf (USA) was third with $152,946.

Played as the Los Angeles Open (Jan 25-28). Second-placed and defending champion Palmer (USA) finished 3 shots behind Casper (USA). [Brookside GC, Pasadena, CA].

Played as the Lucky International Open (Oct 31-Nov 3). Second-placed Raymond Floyd (USA) and Don Massengale (USA) finished 4 shots behind Billy Casper (USA), who recorded his 40th PGA Tour win. [Harding Park GC, San Francisco, Calif. Now known as TPC Harding Park].

Played as the Greater Greensboro Open (April 5-8). Second-placed George Archer (USA), Gene Littler (USA) and Bobby Nichols (USA) finished 4 shots behind Casper (USA), who recorded his second win in this event. [Sedgefield CC, Greensboro, NC].

Casper (USA) won his fifth PGA of America Vardon Trophy, recording the season's lowest scoring average on the PGA Tour. Jack Nicklaus (USA) was second with 69.97; George Archer (USA) was third with 70.34.

Played as the Canadian Open (June 29-July 3). Billy Casper (USA) beat Art Wall Jr (USA) in an 18-hole Monday playoff (Casper 65, Wall Jr 69). [Montréal Municipal GC, Parc Maisonneuve, Montréal, Québec. Original 18-hole course now closed].

Played as the Carling World Open.

Casper (USA) won his fourth (and second straight) PGA of America Vardon Trophy, recording the season's lowest scoring average on the PGA Tour.

The US Open (66th) (Jun 16-20). Casper (USA) beat Arnold Palmer (USA) in an 18-hole playoff: Casper 69 (-1), Palmer 73 (+3). In the final round of regulation play, Casper overcame a seven shot deficit on the last nine holes. [Lake course, Olympic Club, nr San Francisco, CA].

Played as the Western Open (June 23-26). Second-placed Gay Brewer (USA) finished 3 shots behind defending champion Billy Casper (USA), who recorded the second of his four wins in this event. [No.3 Course, Medinah CC, Bloomingdale, nr Chicago, IL].

Played as the "500" Festival Open Invitational (July 28-31). Second-placed Richard "R.H." Sikes (USA) finished 3 shots behind Billy Casper (USA). [Brickyard Crossing GC, at the time known as Speedway GC, Indianapolis, IN].

Played as the San Diego Open Invitational (Jan 13-16). Second-placed Tommy Aaron (USA) and Tom Weiskopf (USA) finished 4 shots behind Casper (USA). [Riverwalk GC, San Diego, CA; at the time known as Stardust CC].

Casper (USA) won the PGA of America Player of the Year Award (based on points allocated for PGA Tour wins, money-list position and scoring average).

Casper (USA) was the PGA Tour 1966 leading money winner, with earnings of $121,945 on the Tour. Jack Nicklaus (USA) was second with $111,419; Arnold Palmer (USA) was third with $110,468.

Played as the Sahara Invitational (Oct 20-23). Second-placed Billy Martindale (USA) finished 3 shots behind Billy Casper (USA). [Paradise Valley CC, Henderson, NV; now called Wildhorse GC].

Played as the Bob Hope Desert Classic (Feb 3-7; formerly the Palm Springs Golf Classic). Second-placed Tommy Aaron (USA) and Arnold Palmer (USA) finished 1 shot behind Casper (USA), who recorded his 25th PGA Tour win. [Bermuda Dunes CC, Coachella Valley, CA. Earlier rounds also at: Indian Wells CC; Eldorado CC; La Quinta CC].

Played as the Insurance City Open Invitational (July 22-25). Billy Casper (USA) beat Johnny Pott (USA) with a birdie at the first playoff hole, to win this event for the second time in three years. [Wethersfield CC, nr Hartford, CT].

Casper (USA) won his third PGA of America Vardon Trophy, recording the season's lowest scoring average on the PGA Tour.

Played as the Western Open (July 1-4). Second-placed Jack McGowan (USA) and Chi Chi Rodríguez (Puerto Rico/USA) finished 2 shots behind Billy Casper (USA), who recorded the first of his four wins in this event. [Tam O'Shanter CC, Niles, nr Chicago, IL; now the municipal Tam O'Shanter Golf Course].

Played as the Doral Open (March 19-22). Second-placed Jack Nicklaus (USA) finished 1 shot behind Billy Casper (USA), who recorded his second win in this event in three years. [Blue Monster course, Doral Resort, Miami, FL].

Played as the Almaden Open (Oct 30-Nov 3; PGA Tour event). Billy Casper (USA) beat Pete Brown (USA) with a six-foot birdie putt at the third sudden-death playoff hole. This followed an 18-hole Tuesday playoff in which Casper and Brown both scored 4-under 68s, and Jerry Steelsmith (USA) was eliminated with a 73. [Almaden CC, San Jose, CA; now called Almaden G&CC].

Played as the Colonial National Invitation (May 7-10). Second-placed Tommy Jacobs (USA) finished 4 shots behind Billy Casper (USA). [Colonial CC, Ft Worth, TX].

Played as the Greater Seattle Open (Sept 24-27). Second-placed Mason Rudolph (USA) finished 2 shots behind Billy Casper (USA). [Broadmoor GC, Seattle, WA].

Casper (USA) won his second PGA of America Vardon Trophy, recording the season's lowest scoring average on the PGA Tour.

Played as the Insurance City Open Invitational (Aug 15-18). Second-placed George Bayer (USA) finished 1 shot behind Billy Casper (USA), who recorded his 20th PGA Tour win. This was the first of Casper's four wins in this event. [Wethersfield CC, nr Hartford, CT].

Played as the Bing Crosby National Pro-Am (Jan 17-20). Second-placed Bob Rosburg (USA), Dave Hill (USA), Art Wall Jr (USA), Gary Player (RSA) and Jack Nicklaus (USA) finished 1 shot behind Casper (USA). [Pebble Beach Links, Monterey Peninsula, CA. Earlier rounds also at: Cypress Point Club and Monterey Peninsula CC].

Played as the Bakersfield Open Invitational.

Played as the inaugural Doral Country Club Open (March 23-26). Second-placed Pete Bondeson (USA) finished 1 shot behind Billy Casper (USA). [Blue Monster course, Doral Resort, Miami, FL].

Played as the Greater Greensboro Open (April 12-15). Second-placed and defending champion Mike Souchak (USA) finished 1 shot behind Casper (USA). [Sedgefield CC, Greensboro, NC].

Played as the "500" Festival Open Invitational (May 24-27; held in conjunction with the Indy 500 race week). Second-placed George Bayer (USA) and Jerry Steelsmith (USA) finished 1 shot behind Billy Casper (USA). [Brickyard Crossing GC, at the time known as Speedway GC, Indianapolis, IN].

Played as the Portland Open Invitational (Sept 21-24). Second-placed Dave Hill (USA) finished 1 shot behind Billy Casper (USA), who won this event for the third straight time. [Columbia Edgewater CC, Portland, OR].

Played as the Orange County Invitational (Oct 13-16). Second-placed Charlie Sifford (USA) finished 1 shot behind Casper (USA). [Mesa Verde CC, Costa Mesa, nr Newport Beach, CA].

Played as the Portland Open Invitational (Sept 22-25). Second-placed Paul Harney (USA) finished 2 shots behind defending champion Billy Casper (USA). [Portland GC, Portland, Oregon].

Played as the Hesperia Open Invitational (Sept 30-Oct 3). Second-placed Bob Rosburg (USA) finished 7 shots behind Billy Casper Jr (USA), who added this PGA Tour title to the Portland Open, which he won the week before. [Hesperia G&CC, Hesperia, CA].

Casper (USA) won the PGA of America Vardon Trophy, recording the season's lowest scoring average on the PGA Tour.

Played as the Brazil Open (Aberto do Brasil). Mario Gonzalez (Brazil) finished in second place behind defending champion Casper (USA). [Gavea GC, São Conrado, Rio de Janeiro].

Played as the Lafayette Open (Nov 12-15). Second-placed George Bayer (USA) finished 4 shots behind Casper (USA), who recorded his third PGA Tour win in his last four starts. [Oakbourne CC, Lafayette, Louisiana].

Played as the Mobile Sertoma Open Invitational.

Played as the Portland Centennial Open Invitational (Oct 1-4; last played in 1948). Second-placed Bob Duden (USA) and Dave Ragan (USA) finished 3 shots behind Billy Casper (USA). [Portland GC, Portland, Oregon].

Played as the Lafayette Open Invitational.

The US Open (59th) (Jun 11-14). Second-placed Bob Rosburg (USA) finished 1 shot behind Casper (USA). [West course, Winged Foot GC, Mamaroneck, NY].

Played as the inaugural Buick Open Invitational (June 19-23). Second-placed Arnold Palmer (USA) and Ted Kroll (USA) finished 1 shot behind Billy Casper (USA). This event marked Buick becoming the first corporate sponsor on the PGA Tour. Monday finish required after Friday second round was rained out. [Warwick Hills G&CC, Grand Blanc, Michigan].

Played as the Bing Crosby National Pro-Am Championship (Jan 9-12; first time as a 72-hole event). Second-placed Dave Marr (USA) finished 4 shots behind Casper (USA). [Pebble Beach Links, Monterey Peninsula, CA. Earlier rounds also at: Cypress Point Club and Monterey Peninsula CC].

Played as the Greater New Orleans Open Invitational (March 9-12; played for the first time since 1948). Billy Casper (USA) beat Ken Venturi (USA) with an eagle at the second playoff hole. [Bayou Oaks at City Park, New Orleans, LA. Played on what was known as City Park's No.1 (East) course; now part of the South course).

Played as the Brazil Open (Aberto do Brasil). Second-placed Leopoldo Ruiz (Arg) finished 9 shots behind Casper (USA). [Sao Paulo GC, Santo Amoro, Sao Paulo, Brazil].

Played as the Kentucky Derby Open Invitational.

Played as the Phoenix Open Invitational (Jan 31-Feb 3). Second-placed Mike Souchak (USA) and defending champion Cary Middlecoff (USA) finished 3 shots behind Casper (USA), who recorded his second PGA Tour win. [Arizona CC, Phoenix, AZ].

Played as the Labatt Open (July 12-15). Second-placed Jimmy Demaret (USA) finished 2 shots behind 25-year-old Billy Casper (USA), who recorded the first of his 51 PGA Tour wins. [Royal Québec GC, Boischatel, nr Québec City].