Wheeler (elbow) could begin his rehab assignment at High-A St. Lucie as soon as this week, Anthony DiComo of MLB.com reports.

This is encouraging news for Wheeler as the start of a rehab assignment marks the final hurdle he'll need to clear in his recovery from a complicated Tommy John surgery. DiComo reports that Wheeler could be getting back into game action as soon as this week, which would start his 30-day clock on his activation from the disabled list. With that in mind, Wheeler could be a waiver wire target in the second half of the season.