Rays starting pitcher Alex Cobb is coming off a 13-strikeout performance Friday against the Padres, which was an outing he relied heavily on his changeup. Out of 117 pitches, Cobb threw his changeup 49 times.

But he doesn't expect to keep the same game plan heading into his outing Thursday against the Red Sox.

"With a team like Boston, I won't have the same approach," he said to the Tampa Bay Times.

Cobb is concerned about cutting down on his home runs allowed. He's surrendered five in his last two starts after yielding two in his first five starts.

"That can't happen," he said. "I need to put the ball on the ground more."