The Phillies couldn't find the right combination at Wrigley Field. In the opener of a three-game series there, they thought they had the right numbers to end their two-game losing streak—12 (hits), six (Cub errors), 11 (runs). But the Cubs (4-3), who withstood a four-run Philadelphia ninth, came up with the winning combination—19 (hits), three (homers), 12 (runs). Chicago went on to sweep the series, winning the second game 8-5 and the third 7-6 on a game-winning single in the 11th by Ryne Sandberg. Sandberg was one of a flock of former Phillies who tormented their old club in the sweep. Larry Bowa, who'd gotten only six hits in his previous seven games, had six against Philadelphia. Sandberg added four hits, Keith Moreland three and Jay Johnstone one. And in the middle game, former Phils Doug Bird and Mike Proly picked up the win and save, respectively. In all, Chicago pounded out 41 hits against Philadelphia. Bill Buckner got eight, and Leon Durham drove in six runs. The only unhappy news for the Cubs was that Leftfielder Scot Thompson suffered a broken collarbone when he crashed into the wall while robbing Luis Aguayo of a probable double and two RBIs in the 11th inning of Game 3. Chicago then beat Montreal 12-8 by stealing four bases and amassing 16 hits. Buckner had four of those hits.
Catcher Gary Carter of the Expos (4-3) may have helped put an end to Buckner's batting spree. Five days after Buckner had smashed Carter's mask with a bat. Carter retaliated by slamming Buck's bat on the ground and breaking it. Later in the game the two exchanged a few harmless punches. Buckner had one hit in that game, which Montreal's Steve Rogers won 4-0, and went hitless in the next, a 5-2 Expo victory. Like Chicago, Montreal lost a leftfielder. Terry Francona, who was batting .321, is out for the rest of the season after tearing up his right knee; he caught his spikes in the rubber warning track while chasing a fly ball at Busch Memorial Stadium. The Expos beat the Cardinals 8-3 in that game as Andre Dawson drove in three runs, his first RBIs in eight games.
St. Louis (3-4) won the other two games of that series, 2-1 and 3-2. The Cardinals won the opener even though Expo Shortstop Chris Speier pulled off the hidden-ball trick against Ozzie Smith. Speier executed the play when he took a throw from the outfield and then tagged out Smith as he edged off second base. In the second game, Smith doubled in the 11th inning and scored the clinching run on a single by Willie McGee.
New York (4-2) twice rallied to defeat St. Louis. Wally Backman and Ellis Valentine drove in two runs apiece during a five-run ninth against ace reliever Bruce Sutter to beat the Cardinals 5-3. The next night Dave Kingman's three-run homer in the eighth was the difference in an 8-5 victory. George Foster also homered for the Mets in that game and went 5 for 5. On Sunday, John Stearns tripled across two runs in the 10th to beat Sutter again, 5-4.
Philadelphia (3-4) ended a five-game skid by winning 4-3 in Pittsburgh as Gary Matthews hit his second home run of the game in the 11th. Mike Krukow then beat the Pirates 8-3 to become the first Philly righthanded starter since August 1978 to win at Three Rivers Stadium. When Steve Carlton defeated the Pirates 8-3, the Phillies had won three consecutive games in Pittsburgh for the first time since 1971. For the week, Matthews had 10 RBIs, Garry Maddox hit .417 and Pete Rose batted .387 as he became the fifth player in major league history to compete in 3,000 games.
Five RBIs by Jason Thompson propelled the Pirates (2-4) past the Mets 13-3. In that game the Bucs pounded out 17 hits.
ST.L 38-28 MONT 35-27 NY 34-30 PHIL 33-30 PITT 28-33 CHI 25-42
Los Angeles (6-0) feasted on taters and goose eggs to move above .500. Dusty Baker's home run in the 11th beat the Padres 4-3, and Pedro Guerrero's homer gave Fernando Valenzuela his ninth win, 2-1 over the Reds in Cincinnati. Between those games, both Baker and Guerrero homered as Bob Welch beat San Diego 6-0. Jerry Reuss also shut out the Padres 3-0. During one stretch of 40 innings, Dodger pitchers gave up only three runs.