Johan Santana threw a successful bullpen session Wednesday and is scheduled to start on Saturday against the Braves. But while Mets manager Terry Collins said there won't be any limitations put on Santana in his first major league start since July 20, Collins said he might limit Santana later in the season. "We have to be very cautious in the month of September to make sure he goes into the off-season feeling good," Collins said. "If that means we have to somehow give him an extra day now and then, figure out a way to do it, we'll do it. I don't want to go into next spring training trying to find out if Johan Santana is going to be healthy. We have to go into the off-season knowing he is." Still, Collins feels Santana is ready for a successful return. "I'm very, very confident that Saturday night we're going to see a good outing out of Johan, because he's feeling so much better about the way his arm feels," Collins said.