Pinch hitter Chris Chambliss singled over a two-man outfield with the bases loaded in a bizarre 10th inning yesterday in Atlanta to give the Braves a 5-4 victory over the Pittsburgh Pirates.

The Pirates had taken a 4-3 lead in the top of the 10th. Paul Zuvella led off the Atlanta half of the inning with a single off Ray Krawczyk (0-1). When Gerald Perry's single skipped between right fielder Doug Frobel's legs and rolled to the fence, Zuvella scored the tying run.

Perry could have scored, too, but coach Bobby Wine held him at third.

"I just screwed it up," Wine said. "We won the game, so it got me off the hook."

"I just didn't react," Frobel said of his error and hesitancy in chasing the ball.

Manager Chuck Tanner of the Pirates ordered Dale Murphy and Terry Harper walked to load the bases with no out. Then he called an outfielder into a five-man infield alignment and brought in Al Holland to face Chambliss, who was hitting for Jeff Dedmon (2-0). Chambliss lofted a fly over over Frobel, who was playing shallow right field.

Pittsburgh reliever John Candelaria had taken a 3-0 lead into the ninth. Murphy and Harper led off with singles and pinch hitter Brad Komminsk walked. Rafael Ramirez cleared the bases with a double to right center that wasted starter Rick Reuschel's six shutout innings. No Pirate has pitched a shutout this season.