Watson, who threw a scoreless inning for his eighth hold Sunday, is working to correct a flaw in his delivery, the Pittsburgh Tribune-Review reports.

EDGE Analysis

"The velocity has ticked up, the sharpness to the pitch location has improved," manager Clint Hurdle said. "I do think he's heading in the right direction." Watson has allowed three homers in 14 games after giving up three home runs in 77 overall contests in 2015. The lefty has thrown five straight scoreless outings, compiling a 2.87 ERA and 1.15 WHIP thus far in 15.2 innings.