The Braves don't know how long shortstop Edgar Renteria will be sidelined because of his strained left rib cage. But from the discomfort he was in Sunday, it looks like he'll at least miss the series beginning tonight in New York. Manager Bobby Cox wasn't that optimistic. "It's still sore," Cox said. "We'll give him a couple more days. Hopefully six days or so. That may be wishful hoping."