Fernando Valenzuela joined Oakland's Dave Stewart in the record book last night, pitching the second no-hitter of the day and baseball's fourth in June as the Dodgers beat the St. Louis Cardinals, 6-0, in Los Angeles.

A few hours after Stewart no-hit the Toronto Blue Jays, 5-0, at the SkyDome, Valenzuela duplicated the feat against the Cardinals. It was also the first time in baseball history that no-hitters had been thrown in both leagues on the same day.

Ironically, Valenzuela and Stewart were teammates for three years with the Dodgers in the early 1980s.

Two National League no-hitters were thrown on Oct. 15, 1892, by Bumpus Jones of the Cincinnati Reds against Pittsburgh and Jack Stivetts of the Boston Beaneaters in five innings against Washington.

Vince Coleman struck out leading off the ninth and Willie McGee followed with a walk. But Pedro Guerrero then grounded into a double play, with Juan Samuel fielding the ball at second and throwing to first. When it ended, Valenzuela pumped his arms and catcher Mike Scioscia hugged his pitcher as the other Dodgers charged to the mound.

"Really, I'm very happy to have this game," Valenzuela said. "In Mexico, we play doubleheaders and I had a no-hitter in seven innings and lots of one-hitters. This is more exciting because you have to face all the good hitters."

It wasn't a surprise that Stewart, baseball's winningest pitcher over the last three years, authored a no-hitter, but Valenzuela certainly didn't figure to follow suit. Valenzuela (6-6) had lost five of his last six starts, hadn't gone nine innings in his last 10 starts and hadn't beaten the Cardinals in over two years.

"I never think that my career will be over. I've been working for two years and this game is great because it shows all the work I've been doing," Valenzuela said. "My confidence is with me at all times. I have bad games and I know this {a good game} will happen."

The left-hander was masterful, striking out seven and walking three. One error was charged, in the first when left fielder Kirk Gibson dropped Pedro Guerrero's short fly ball while trying to make a one-handed catch.

Valenzuela was tested by the first batter of the game. Coleman grounded deep to short and was barely beaten to first by Alfredo Griffin's throw. Griffin made a similar play on McGee in the seventh, but retired him by a wider margin than he did Coleman.

With two out in the eighth, Craig Wilson lined a shot up the alley in left-center, which centerfielder Stan Javier flagged down just in front of the 385-foot sign.

The no-hitter was the first by a Dodger since June 27, 1980, when Jerry Reuss, also a left-hander, beat San Francisco, 8-0. The last time the Cardinals were no-hit was by Cincinnati's Tom Seaver on June 16, 1978.

Mets 4, Reds 2: Host New York tied a club record with its 11th straight victory as Darryl Strawberry extended his hitting streak to 18 games with a home run.

The Mets, who have won 20 of their last 23 games, are 21-7 since Manager Bud Harrelson took over for Davey Johnson last month.

Bob Ojeda (4-3) gave up 10 hits and two runs in 8 1/3 innings. Jeff Innis got the last two outs for his first save.

Strawberry gave the Mets a 1-0 lead when he hit his 17th homer of the season on a 3-1 pitch from Rick Mahler (2-3). Strawberry is 28 for 67 (.418) during the streak with nine homers and 24 RBI.

Following Strawberry's homer, Howard Johnson beat out a single to the mound, stole second, went to third on Mark Carreon's single and scored on a sacrifice fly by Mackey Sasser, the first of his three RBI.

Giants 7, Pirates 3: Will Clark had a home run among his three hits and drove in three runs as San Francisco, at home, knocked Pittsburgh out of first in the NL East.

New York moved three percentage points ahead of the Pirates; the Giants pulled within 8 1/2 games of the Reds in the NL West.

Trevor Wilson (4-0) pitched seven inning and Jeff Brantley went 1 1/3 innings for his 10th save.

Phillies 2, Astros 0: Pat Combs pitched a six-hitter as Philadelphia won at home, dropping Houston to 0-13 on the road in June.

The Phillies snapped a scoreless tie in the fifth against Bill Gullickson (5-6) after the first two batters were retired. Ron Jones, John Kruk and Charlie Hayes singled to make it 1-0.

Cubs 3, Padres 2: Doug Dascenzo tripled home the tying run and scored on Dwight Smith's single as Chicago rallied in the ninth in San Diego.

Pinch hitter Gary Varsho started the rally with a one-out single off reliever Greg Harris (4-2) and scored on Dascenzo's triple down the right field line. Smith followed with his RBI single but was thrown out at third trying to advance on a single by Ryne Sandberg, 1,500th career hit.

Braves 4, Expos 2: Rookie Dave Justice drove in two runs with a homer and a single sending host Montreal to its third straight loss.