Cubs shortstop Javy Báez was a late scratch from Wednesday night's starting lineup against the Phillies due to a right thumb sprain.
Báez jammed the thumb in his first at-bat Tuesday and woke up sore Wednesday, Cubs manager David Ross said.
"We'll see how he feels [Thursday] when he takes some swings," Ross added.
Báez grounded out in that first at-bat Tuesday, later hitting two home runs in a 15-10 Cubs loss.
He missed time on two occasions in June due to the thumb, jamming it on June 6 against the Giants, missing the next three games.
Báez returned to the lineup June 11 against the Cardinals but sustained a different injury to the thumb June 12. He dove into the crowd down the left field line for a foul pop fly.
He missed one game after that play.
Sergio Alcántara, whom the Cubs recalled from Triple-A Iowa on Tuesday, started for Báez at shortstop Wednesday.