Pitchers and catchers reported to spring training on Valentine's Day, and the rest of the squad joined their teammates on the diamond February 18.
New Giants, like pitcher Tim Hudson and left fielder Michael Morse, are looking to prove themselves to their new teammates, but their spots on the roster are secure.
Returning players such as pitcher Tim Lincecum and third baseman Pablo Sandoval will use their spring to re-establish their former MLB dominance.
Young stars Buster Posey and Madison Bumgarner will reacquaint themselves with veteran mainstays Angel Pagan and Marco Scutaro.
For a few players, spring training is do-or-die. For them, it's either break out from the pack or miss a chance to play on an MLB roster.
Here are five players who could become those breakout candidates.