Smyly has been working on his mechanics since his last start, Marc Topkin of the Tampa Bay Times reports.
The report comes via Rays manager Kevin Cash, who added that he expects the extra work his southpaw has been putting in to be reflected in the quality of Saturday's performance against the Tigers. The 26-year-old was touched for 10 hits and six earned runs over five frames in his last start versus the Mariners. He also gave up another two homers in that outing, bringing his season total to seven in 49.2 innings.