Tim Wallach hit a three-run homer and Steve Rogers threw a five-hitter yesterday in Pittsburgh to give the Montreal Expos a 6-1 victory over the Pirates for third place in the National League East.

At the conclusion of the game, the Expos announced that Jim Fanning would not return as manager next season, but would move into the front office as vice president. No replacement was named as manager.

Expos' first baseman Al Oliver went two for three to clinch his first NL batting title with a .331 batting average. Rogers (19-8) lowered his ERA to a league-best 2.40.

Oliver said the Expos players are sorry to see Fanning go. "He treated us right," Oliver said. "But it's for his own good that he's quitting. He got a lot of unfair criticism."

The Expos' victory spoiled the last playing performance of retiring Pittsburgh first baseman Willie Stargell. Batting leadoff, Stargell hit Rogers' first pitch off the pitcher's glove and made it safely to first with a single. Stargell stayed in the game long enough to take third on a hit-and-run single by Omar Moreno and then left for a pinch runner. With the organist playing "Pomp and Circumstance," Stargell tipped his cap off as he ran off the field. The fans then brought Stargell out of the dugout for one final curtain call.