Athletics lefty Sean Manaea exited yesterday’s game after just two innings due to left shoulder tightness, per Susan Slusser of the San Francisco Chronicle. The departure of yet another of the Athletics’ top starters is troubling enough, but Slusser adds that Manaea’s velocity was topping out at 90 mph on Wednesday — a far cry from the 95 mph at which he usually tops out and from the 92.5 mph he’s averaged thus far in 2017. Slusser has since tweeted that Manaea did pass some initial strength tests with his shoulder today and hopes to try throwing tomorrow.