Manager John Farrell thinks Cooper has shown improved confidence from when he was called up to Toronto last season, and he is impressed with his presence at the plate.
"He's got a very natural swing, a low-maintenance swing that he repeats consistently," Farrell said. "When he gets his pitch in the strike zone, he's able to square it up routinely."
For his part, Cooper doesn't believe there is much to his success. He's simply staying within himself and, so far, seeing results.
"I feel great. I'm seeing the ball well," Cooper said "I'm just really confident in the box right now. I don't have the 'high-tower power,' as they call it. The kind of player that I really want to be is gap-to-gap -- a high-average player.
"I'm staying with my approach more. So far I haven't been chasing a lot."
Cooper, 25, was Toronto's first-round Draft pick in 2008, and he got his first taste of the big leagues last season, appearing in 27 games. The first baseman has never been known as a power hitter, but at Triple-A Las Vegas in 2011, he led the Pacific Coast League with a .364 average and 51 doubles.