Chad Billingsley (12-9, 3.93) vs. Brad Penny (9-8, 5.15).
DODGERS' MAGIC NUMBER: officially 17, practically 16 (see comments)
COMMENTS: Everything you need to know about today's matchup, from Henry Schulman of the San Francisco Chronicle:
[Brad Penny] is scheduled to pitch at China Basin against his former team, the Dodgers, on Sept. 13. Told that there'll be 42,000 people there who hate the Dodgers, Penny smiled and said, "42,001."