President Warren G. Harding threw out the ceremonial first pitch before a Washington Senators game held on April 13, 1921, at Griffith Stadium in Washington, D.C. Washington ended up losing to the Red Sox, 6-3, making this the first time in six Opening Days contests the Senators have lost with the President of the United States throwing out the first pitch.

That grip looks like he threw a straight change.
Gotta keep the crowd’s expectations off balance