Brignac began working out on Dec. 1 with the goal of adding muscle. His weight -- or lack thereof -- has been problematic for him in recent seasons.
"It was something that I needed to put on," Brignac said of the extra mass. "I have weight issues. I lose weight throughout the season every year, so it's important that I come in a little bit heavier. It's something that I have to stay on top of."
Brignac is set to take over as the starting shortstop, after Jason Bartlett was sent to the Padres in an offseason trade. Brignac hit .257 with eight home runs and 45 RBIs in 2010, while appearing in 113 games at second base, shortstop and in the outfield.