Whalen allowed four runs on two hits and four walks and lasted just 2.2 innings in a no-decision Tuesday against Arizona.
Whalen has just one quality start in five chances this season and has been prone to lapses in control, as he has walked 12 batters in just 24.2 innings. This is already the second time he has walked four batters in a start this season, and he also hit his third batter Tuesday night. Until he can rein in the control, he'll struggle to improve his 6.57 ERA.