* The 20th anniversary of the Watergate break-in has not driven former President Richard Nixon underground. On the day after the All-Star Game, he will unveil his personal list of all-time baseball greats during a fund-raiser at the Richard Nixon Birthplace and Museum in Yorba Linda, Calif. Tickets are $200 and $500.
* There have been rumors that the Toronto Blue Jays are trying to make a big play for Angels left-hander Jim Abbott, but don't expect the Angels to break up the nucleus of their starting rotation unless the Jays do something equally dramatic.
* There also have been rumors in Montreal that the Expos would like to renew interest in Orioles first baseman Randy Milligan, but seems unlikely that they would find a receptive ear now. They pulled out of a deal for Milligan in December, but he was considered expendable then.