In the fourth matchup of 300-game winners since 1900, Angels’ hurler Don Sutton (317) allows four hits in six innings to beat Steve Carlton (328) and the Twins, 12-3. The 645 combined victories is the largest number of wins ever accumulated by pitchers starting the same major league game.

On August 4, 1987 — In the fourth matchup of 300-game winners since 1900, Angels’ hurler Don Sutton (317) allows four hits in six innings to beat Steve Carlton (328) and the Twins, 12-3. The 645 combined victories is the largest number of wins ever accumulated by pitchers starting the same major league game.

Source:
Baseball Reference August 4
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game