Pedro Martinez earned a victory during his first start of the season last week, but the peace of mind he gained may have been even more important. "I feel good," said Martinez (1-0, 3.60 ERA), who will start again this afternoon for the Mets at Shea against the Astros and their ace, Roy Oswalt (14-6, 3.35). "I feel more confident, without a doubt." Martinez, who spent the entire season recovering from October rotator cuff surgery, was just as pleased with how he felt after his season debut as he was with the win. "I bounced back the next day after the outing and threw in the bullpen and felt good," said Martinez, who gave up two earned runs in five innings in a 10-4 win over the Reds, throwing 76 pitches.