Looking ahead

• Diamondbacks at Giants, 3:45 p.m. ET: Brandon Webb (3-0, 2.14 ERA) will bid for his National League-leading fourth win of the season. He'll be opposed by Barry Zito (0-3, 4.50 ERA), who has allowed at least four runs in each of his first three starts.
• Red Sox at Yankees, 7:05 p.m. ET: Chien-Ming Wang (3-0, 1.23 ERA) was dynamite in his last start, tossing a complete game in the Yankees' 4-1 win over the Red Sox. He'll face rookie Clay Buchholz (0-1, 3.27 ERA), who was the tough-luck loser against Wang and the Yankees in his last start.
• Mariners at A's, 10:05 p.m. ET: Felix Hernandez (1-0, 1.66 ERA) has allowed a combined four earned runs in his first three starts. He'll be opposed by Joe Blanton (1-2, 4.15 ERA), who has given up a combined 29 hits in four starts (26 innings pitched).