By C. Trent Rosecrans
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Home sweet home: This season Ubaldo Jimenez was 3-5 with a 5.55 ERA at Coors Field, but he likes his new digs much better. In two starts at Progressive Field, he's allowed just 12 hits and struck out 16 batters with a 0.60 ERA. On the road, he's struggled with his new team, allowing 25 hits and 11.77 ERA in three starts. But hey, tonight the Indians and Jimenez are in Cleveland, so the A's should watch out. Rich Harden (4-2, 4.55 ERA) goes for the A's, who have lost four straight and five of their last six. Athletics at Indians, 7:05 p.m. ET
Nine on the line: The Diamondbacks can extend their season-long winning streak to nine with a victory against the Rockies tonight. Arizona right-hander Josh Collmenter is 2-1 with a 1.73 ERA in his last four starts, giving up just five earned run during that run. Arizona starters have a 0.83 ERA during the eight-game winning streak. Not only has Arizona won eight straight overall, it's won its last 11 at Chase Field, tying a team record set in 2000 and matched in 2003. The Diamondbacks have also won 13 of their last 17 against the Rockies at Chase Field and 10 of 14 in all games against Colorado this season. Rockies at Diamondbacks, 9:40 p.m. ET
Marquee matchup: You want pitching? Look west as Felix Hernandez and the Mariners face Dan Haren and the Angels. Hernandez, last year's Cy Young Award winner, has struggled in his career against Los Angeles, going 4-9 with 4.01 ERA against the Angels, but is 0-1 with a 2.40 ERA in two starts in Anaheim this season. Haren, on the other hand, loves pitching at Safeco Field, where he is 4-1 with a 2.26 ERA in eight career starts. He's 9-4 overall against the Mariners with a 2.52 ERA. Angels at Mariners, 10:10 p.m ETFor more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.