Indians starter Trevor Bauer led the way with 14 strikeouts, locking down the shutdown inning when Gray couldn't.
Staked to a 3-0 lead after four innings, Gray walked his first batter of the fourth en route to a four-run frame. The Indians tacked on three more in the fifth, with Gray only able to record two outs in the inning and finishing at 92 pitches.
The seven earned runs allowed matched his total from his previous four starts combined.
"Any time we have a three-run lead, I think everyone in this locker room expects to win games like that," Gray said.