James Charles Jacob Bagby Sr. (October 5, 1889 – July 28, 1954) was an American right-handed starting pitcher in Major League Baseball.

The 1920 Indians team was powered with stars such as Tris Speaker, Stan Coveleski and Ray Caldwell, and minor-league call-up Duster Mails, Charlie Jamieson, Elmer Smith and Bagby.

Since that game was played, only three other pitchers have collected 30 victories in one season: Dizzy Dean, Lefty Grove and Denny McLain.

During the game's fourth inning, Bagby came to bat with two men on bases, hitting the first home run by a pitcher in modern World Series history.

[1] The following inning, another of Bagby's teammates, Bill Wambsganss, turned in the first unassisted triple play in World Series history.