"It's just a matter of executing his pitches," Maddon added. "His stuff is really good. He came out, he was throwing the ball really well. I liked the elevated fastball. He made some really good pitches. It's kind of like one mistake that's hurting him per outing."
Entering Sunday's action, the five home runs Gomes had surrendered this season tied him for third among American League relievers. Four of the five came against right-handed batters.
"I've got to start making better pitches; it's not that complicated," Gomes said.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.