Mark Teixeira still has no idea when he'll be back with the Yankees. Despite being able to start baseball activities yesterday, when he took swings in the batting cage before a 10-7 win over the Blue Jays in The Bronx, the first baseman refused to estimate a date for his return from a strained left calf. "I don't want to put any timetable on it," Teixeira said. "We tried that the last time, and it put pressure on everybody. We all wanted me to be back as soon as possible, and I wasn't. I wasn't ready." His comeback then lasted one game. Now, he's being more cautious. Teixeira only had been getting treatment and working out in a pool. He isn't ready to do anything on the field, but he would like that to change by the end of the weekend.