Worth noting

• Right-handed reliever Chris Withrow underwent Tommy John surgery Tuesday in Penascola, Fla. The 25-year-old posted a 2.95 ERA in 20 games this season.

• Right-hander Chad Billingsley threw 35 pitches at Dodger Stadium on Tuesday. Mattingly said he expects Billingsley to throw another bullpen, then -- if all goes well -- make his first rehab start.