CBSSports reported that the team diagnosed Ventura with "hand weakness." Ventura said he expects to undergo an MRI soon.
On Saturday, Andy McCullough of the Star reported that Ventura has irritation in his ulnar nerve but that trainers told manager Ned Yost they don't think the pitcher will miss a start.
Ventura had only pitched three innings in Friday night's game. He had given up two earned runs on four hits in three innings.
This is the second consecutive start Ventura has lasted only three innings. Last week, Ventura gave up four runs in that inning-span to the Texas Rangers.
The team did not address Ventura's injury further while the game was still being played Friday.
St. Louis beat Kansas City 4–0. The Royals are two games ahead in first place in the American League Central Division.
- Will Green