Abreu (ankle) was activated from the 15-day injured list Tuesday.
The 26-year-old landed on the injured list with a sprained ankle in early May, and he'll rejoin the active roster after a three-game rehab stint with Triple-A Round Rock. Abreu was operating in a low-leverage relief role prior to the injury and has a 3.52 ERA, 1.96 WHIP and 8:11 K:BB over 7.2 innings.