Pinch-hitter Bob Bailor hit a two-out, two-run double in the ninth inning to give tehe New York Mets a 3-2 victory over the San Diego Padres last night at Shea Stadium.

With the Padres leading 2-1, Ellis Valentine led off the Mets' ninth with a single. After Hubie Brooks struck out, reliever Gary Lucas got pinch hitter Rusty Staub to ground out but walked pinch hitter George Foster, out of the starting lineup with a hamstring pull.

Wally Backman ran for Foster, and Bailor then doubled into the left field corner.

Lucas (4-3) was the losing pitcher. New York's Randy Jones (1-4) allowed seven hits in pitching his first complete game since beatingthe Chicago Cubs on July 29, 1980.

It was the second straight game a pinch-hitter had driven in the winning run with two outs in the ninthfor the Mets. Staub homered in the ninth Sunday to lead the Mets over San Francisco 6-5.

"Pinch-hitting is the hardest thing there is in baseball," said Bailor. "I've only done it once before this season, and I can't recall the last game I got hit as a pinch-hitter."