Watson is on the 7-day injured list at Double-A Binghamton with an oblique injury, Matt Eddy of Baseball America reports.
Watson left his May 5 start with the injury after recording two outs (zero strikeouts) and surrendering four earned runs. The 23-year-old righty has an 8.55 ERA, 1.90 WHIP and 19:12 K:BB in 20 innings across six starts this season.