Jansen was pulled from Wednesday's game against Houston with an apparent injury, Christopher Smith of The Springfield Republican reports.

EDGE Analysis

Jansen appeared uncomfortable on the mound after getting Jon Singleton to pop out in the ninth inning and was immediately removed by a trainer. The Red Sox will take a look at him and provide more details on what is bothering Jansen, but for now the 35-year-old closer should be considered day-to-day.