Joba Chamberlain returned to the major leagues Wednesday afternoon, but he didn’t rule. In 1 2/3 innings he allowed a walk and four hits, including a home run, but only two runs. That was okay, as the Yankees led big at the time, so Joba could afford to get used to the big leagues again. The Yankees beat the Orioles 12-3 and extend their AL East lead to 6 1/2 games.