THE NEXT TASK IS AT HAND
FRESH from producing a $150 million profit for the Summer Olympics by doing the Games his way, Peter Ueberroth becomes the new commissioner of baseball tomorrow. He plans to do that job his way, too. ''I think the owners' perception of what I am and what I intend to be are probably not the same,'' Ueberroth said. ''I won't be a commissioner for the owners. I told them that several times. I'll probably have to tell them a lot more times. I will be commissioner for baseball.'' In taking that approach, Ueberroth said he would not represent the owners in the approaching negotiations for a new basic agreement between them and the players. Rather, he explained, he will try to induce the two sides to ''meet on some common grounds.''