"When things don't go right, usually you just feel out of sync," Pena said.
The Rays have a pitching machine that throws small baseballs for batting practice.
"The whole point of that drill is to keep your body out of your swing and use your hands more, and I think [Pena] did a great job with that," Rays manager Joe Maddon said. "He and I were talking, and I thought he was getting his body involved way too much.
"Early in the season, there was a lot of hand involvement. He does that drill really, really well. That was great. Now, it's a matter of taking it into the game, but a lot of confidence [can] be derived from doing something like that around 2 o'clock for a 4 o'clock game."
Maddon classified the small ball routine as a "feel drill."
"So much of our game is based on feel -- and that helps you re-establish the feel in your hands, bat head, or whatever, quickly and without a whole lot of thought," Maddon said. "So he felt good about it."
Pena likes the drill.
"It's good, the ball is smaller, it's heavier," Pena said. "That's a good machine to kind of simplify things and try to get it all in line. Feels like you're hitting a golf ball because it's heavy and solid."