Carlson, who is also dealing with an oblique injury, could undergo surgery on his left ankle, John Denton of MLB.com reports.

EDGE Analysis

The ankle has bothered Carlson since mid-May and remains an issue, and he is set to receive an opinion from a different specialist than he saw previously. Carlson could require a procedure to move past the injury, and in that scenario it would be tough to envision him playing again this season.