Robles (illness) was acquired by Boston from Minnesota in exchange for Alex Scherff on Friday, Aaron Gleeman of The Athletic reports.
Robles hasn't pitched since Tuesday, when he surrendered four runs before exiting with dizziness and lightheadedness, but he's apparently healthy enough to pass a physical. The 30-year-old was in the closer's mix with the Twins but is unlikely to see those chances for the Red Sox with a 4.91 ERA, 1.39 WHIP and 43:24 K:BB in 45 appearances this year.