Derek Jeter still is trying to get accustomed to the Yankees treating him cautiously, as they did by sitting him out Saturday and Sunday with a tight right quadriceps. Jeter returned Wednesday night for the second game of a doubleheader against the Cubs and went 1-for-5, playing all nine innings at shortstop in a 2-0 win at the Stadium. “I’ve always understood, but I didn’t like it,” Jeter said of the days off. “I still don’t like it, but I get it — the fact that it’s a long season.” Jeter said he didn’t complain about an injury to manager Joe Girardi. “I didn’t say anything,” Jeter said of the quadriceps injury he suffered Friday. “I was running to first and evidently someone saw me stretching. I don’t know who. Joe said, ‘Did you hurt yourself? I saw you stretching.’ I said, ‘No, I was just tight.’ No big deal. “That was the end of the conversation. Saturday, he was not planning on playing me anyways, and then when I got here on Sunday, he said, ‘You have the day off.’ ” Jeter, who singled and reached on an error, said he felt fine. The same can’t be said for Brian Roberts, who remains out with a lower back injury.