Hubbell was the cause of a baseball rules change. With the Phillies in 1925, he walked
a batter intentionally by throwing four times to first base, as there was no rule
against it. When he did it again several weeks later, league president John Heydler
threatened to suspend him. The following year the rule was changed, requiring that
the pitches be made to the catcher.
»May 25, 1922:
In the 1st inning of Game One against the Robins, Phillies pitcher Bill Hubbell is hit in the head by a line drive off the bat of Tommy Griffith and fractures his skull. Hubbell will return to pitch in 35 games this year. Brooklyn sweeps a pair, winning 75 and 7–0. Vance throws the shutout.