Brebbia (elbow) signed a one-year, major-league contract with the Giants on Monday.
The 30-year-old righty missed all of last season due to Tommy John surgery, a procedure he underwent in early June. The timing of the surgery means he's unlikely to be ready to return until late in the upcoming campaign. He owns a career 3.14 ERA in 175 innings of relief at the big-league level, so there's a decent chance he's a useful piece of the Giants' bullpen when he eventually arrives.