Tom Seaver, the three-time Cy Young Award winner, has ended his comeback bid with the New York Mets, it was reported yesterday.

According to the Associated Press, the Mets have planned a news conference at noon today to announce Seaver will not pitch for them this year.

Seaver, who pledged he would retire if he felt he could not pitch effectively in the major leagues, had done poorly since agreeing to terms with his former team in May.

Seaver, 42, has not pitched in the majors since last August, when a knee injury ended his year with the Boston Red Sox. The Red Sox did not re-sign him after the season, making him a free agent.

Seaver, with a career record of 311-205 and a 2.86 earned run average, originally hoped to make his first start for the Mets on June 20.

But Seaver had made virtually no progress in one exhibition start, two simulated games and other workouts with the Mets. He was particularly disappointed with his lack of velocity.

Saturday, the day Seaver had wanted to make his first major league start this season, he was hit hard in a simulated game against four Mets' batters. He threw 60 pitches and gave up four runs on 10 hits.

Yesterday, Mets Manager Davey Johnson said, "When I spoke to him {Seaver} yesterday, he seemed very discouraged. Tom's a perfectionist and he knows himself better than anybody else. I know he's very disappointed with his progress. If he decides he doesn't want to play anymore, I'll respect it."

In his first appearance, an exhibition game against the Mets' Class AAA Tidewater team on June 11, Seaver allowed seven runs and eight hits in two-plus innings.

Last Tuesday in a simulated game, Seaver threw 88 pitches and gave up 13 hits.

Mets 8, Phillies 3:

Dave Magadan drove in three runs as New York completed a three-game sweep over Philadelphia at Shea Stadium.

The victory was the fourth in a row for New York while the Phillies lost their sixth straight, four under new manager Lee Elia. Len Dykstra had three hits and scored three runs for the Mets, who are 6-0 against the Phillies this season.

Cardinals 7, Expos 3:

Vince Coleman hit a two-run triple and scored on Ozzie Smith's double in the second inning at Busch Stadium and St. Louis rookie Joe Magrane won his fifth without a loss.

It was the division-leading Cardinals' first win in five games against the Expos this season.

Magrane gave up three runs on six hits in seven innings. He was activated from the disabled list Friday. A sore elbow had kept him from pitching since May 29.

Coleman is hitting .298 and has reached base in 50 straight games by either a hit or a walk.

Astros 6, Dodgers 1:

Houston's Jim Deshaies (7-2) won his fifth straight, combining with Larry Andersen on an eight-hitter, and Billy Hatcher hit a home run in the Astrodome.

Loser Rick Honeycutt (2-6) did himself in in the first inning when he threw a pickoff attempt at second base into center field, then wild-pitched home a run.

Two others scored when third baseman Phil Garner, obtained by the Dodgers from the Astros this week, misplayed a grounder.

Reds 6, Braves 5:

Cincinnati's Buddy Bell hit his fifth home run of the season with one out in the 10th inning off Gene Garber in Atlanta, in a series that had an altercation at the mound for the second straight game.

Atlanta reliever Jim Acker hit Tracy Jones on the arm with a pitch in the eighth inning. Jones began walking to first base, then charged the mound and began wrestling with Acker. Players from both benches spilled onto the field. Jones was the only one ejected.

"It was a fairly exciting series," Bell said.

Eric Davis hit his 22nd homer for the Reds; Ozzie Virgil hit his 19th and 20th for the Braves.

Cubs 6, Pirates 3:

Chicago's Keith Moreland hit a two-run homer and had three RBI at Wrigley Field and Steve Trout (4-1) won his fourth straight.

Lee Smith pitched the ninth inning to get his major league-leading 19th save. It was the Cubs' first win over Pittsburgh in five games this season.

Scott Sanderson, pitching in relief of Trout, strained his groin muscle and was placed on the 15-day disabled list after the game.

Giants 11, Padres 2:

San Francisco's Kelly Downs (6-3) allowed four hits over seven innings and had an RBI single, and Will Clark, Bob Brenly and Matt Williams hit home runs in San Diego.

Downs twice this year has beaten the Padres by 1-0 scores.