That leaves seven starts for manager Mike Scioscia to get out of his fourth and fifth starters -- slots in the rotation that have combined to go 6-10 with a 6.16 ERA since the end of June.
Veterans Jerome Williams and Joel Pineiro appear to have the inside track for those starts. Williams will start Wednesday against the Mariners. The Angels won't need another start from either until next week.
Meanwhile, rookies Garrett Richards and Tyler Chatwood have probably made their last starts of the season. However, both will be available to pitch out of the bullpen down the stretch, and Richards could find himself asked to step into a significant role, helping create some bullpen depth leading up to setup man Scott Downs and closer Jordan Walden -- a bridge the Angels have spent all season trying to fill.
Richards has some experience pitching out of the bullpen as a freshman and sophomore at the University of Oklahoma, where he spent one season as the Sooners' closer. His mid-90s fastball along with a power slider and changeup could suit him to a relief role down the stretch.
"His future is obviously as a starter," Scioscia said. "But this month, we feel he could fill more of an impact role in the bullpen if his stuff plays as well as we think it will.
"We'll see how it evolves."
Chatwood's control issues, on the other hand, make him an unlikely candidate to pitch anything but long-relief innings in September.
Haren got a win Monday, allowing three runs in six innings as the Angels beat the Mariners 7-3.
--RF Torii Hunter threw Seattle's Mike Carp out at third base in the first inning Monday. Carp was trying to advance on Justin Smoak's single to right. The outfield assist was Hunter's 14th of the season, tying him for second in the American League and matching his career high, set in 2001.
--Hunter was 1-for-3 with an RBI triple and a sacrifice fly in Monday's win. He has 16 RBI in his past 16 games and is one of the hottest hitters in the American League since the start of August, going 49-for-142 (.345) in his past 38 games.
--SS Erick Aybar extended his career-best hitting streak to 15 games with a single in his last at-bat Monday. Aybar is batting .339 (19-for-56) during the streak.
--3B Maicer Izturis, who missed the previous three games due to a right thigh contusion, returned to the lineup Monday as the Angels' leadoff man. He went 0-for-3 and was hit by a pitch.
--1B Mark Trumbo had a two-run home run and a double Monday, giving him 26 home runs and 80 RBI for the season. He leads the Angels in both categories. The Angels have never had a rookie lead them in home runs and RBI in the same season. Only one rookie has hit more home runs as an Angel: Tim Salmon had 31 in 1993 when he won the franchise's only Rookie of the Year award.
--RHP Ervin Santana is scheduled to start Tuesday against Mariners ace Felix Hernandez. Santana has a 2.62 ERA in 17 starts since June 4 and is 11-5 with a 3.69 ERA in his career against the Mariners.