Just by looking at Ramón Laureano, you'd have no idea he could crush baseballs as far as he does.

The A's centerfielder stands at 5-foot-11 and is more well-known for his blazing speed, but this season, he has truly become a bona fide slugger.

Laureano, 24, blasted his 18th home run of the year Sunday, helping the A's sweep the White Sox, 3-2. His 18 homers rank third on the team and are three away from passing Coco Crisp for the most round-trippers by an Oakland centerfielder in the last 19 years.

Laureano's power surge might come as a surprise to some, but not Bob Melvin.

"At some point in time, we felt like he had a chance to be a 30-home-run guy," the A's manager said. "Maybe on pace a little sooner than we expected based on experience in the big leagues. But not (surprised) at all if you watch him take (batting practice). He's a strong guy all the way around, whether it's throwing arm, whether it's speed -- he stole a base today pretty easily -- and he's got a lot of power. So understanding the league, making adjustments and so forth, no not a surprise to me."

The power aspect of Laureano's game is relatively new, however. Prior to this season, he had never hit more than 15 home runs at any level of professional baseball. Laureano credits his weight room work -- he added 10 pounds of muscle this offseason -- and plate adjustments for the improvement.