Add another one to the list of strange injury incidents involving baseball players.
Hosmer felt light-headed because of the heat and briefly passed out, leading to a cut on his forehead.
"I just fell," he said. "It wasn’t fun, that’s for sure. But I’m OK."
The 29-year-old recovered and was included in the Padres' starting lineup on Sunday against the Cincinnati Reds.
Hosmer, who signed an eight-year, $144-million contract with San Diego before the 2018 campaign, entered Sunday hitting .213/.276/.325 with two home runs and 11 RBIs over 21 games this season.