Reds outfielder Austin Hays left the game vs the Kansas City Royals on Wednesday after fouling a ball off his foot.
Hays stayed in the game initially to run the bases, but was later pinch-hit for by Gavin Lux.
John Sadak announced on the broadcast that it is a left foot contusion for Hays.
The 29-year-old has been one of Cincinnati's best hitters this season, slashing 308/.346/.564 with 15 extra-base hits in 30 games.
If Hays were to miss much time, it would be a major blow for the Reds offense.
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