Attention, Giants Fans!

WHILE THE SAN FRANCISCO GIANTS WERE IN THE ARIzona desert working off their winter flab, back home in Candlestick Park a little bit of history was unfolding. Five hundred candidates turned up for open auditions to become the team's new stadium announcer, but none of the dozens of experienced sports broadcasters vying for the plum platform got the nod. Instead the Giants will start a rookie -- a legal secretary from Walnut Creek, California. On opening day, April 5, Sherry Davis will become the first woman ever to be a full-time pro baseball announcer. The pay: $75 a game. Davis, a longtime baseball buff with training in TV-commercial voice-overs, has a smooth delivery the front office hopes fans will prefer to the gab prevalent around the league.