Although Willson Contreras’ placement on the 10-day injured list was retroactive by a day and would have made him eligible to return for the Cardinals' final regular-season series at Wrigley Field at the end of September, the first baseman's season came to an end Wednesday.

Contreras was placed on the 10-day IL after being diagnosed with a “mild” biceps strain on Tuesday. The designation for his IL move was announced by the Cardinals as a right shoulder strain.

The decision to end Contreras’ season comes as a precaution to prevent the injury from worsening, and as the Cardinals sit 4.5 games back of the third wild card spot in the National League.

“His season is over,” Cardinals manager Oli Marmol said. “This is one that's different, where it can get worse if we try to push through it.

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