TEMPE, Ariz. -- Saturday afternoon was a good display of why this Mark Trumbo-to-third base thing is fairly pivotal to the Angels' hopes.

He made a few plays in the field for the first time -- including a diving catch on a Joaquin Arias line drive -- but the part that comes naturally arrived three innings later. Trumbo got a hanging changeup and jacked it over the berm in left-center field for a two-run home run during the Angels' 9-5 win over the San Francisco Giants. Not bad for a guy who was taking his first game at-bats of the spring.

Trumbo's 29 home runs last year might have just hinted at his power potential and he's working to become a better overall hitter. He's trying to cut down on his free-swinging ways, work some deeper counts and improve on an on-base percentage, .291, that was well below the league average.

So, Saturday was a step forward in terms of Trumbo's greatest strength and his biggest weakness.

If this spring experiment goes well, he'll give the Angels their most powerful lineup. He, Albert Pujols and Kendrys Morales have the potential to account for 100 home runs all by themselves. Trumbo, who has been a first baseman since 2005, said he's starting to feel more and more like a third baseman.

"It might be more so when I get some very challenging plays and I'm able to make them to help my confidence," Trumbo said. "Right now, I think I can make the routine play. It's positioning, when to play a guy in, some of that stuff that's going to take a while."