Manny Trillo, Jim Sundberg, Burt Hooton, Von Hayes, Steve Henderson and Dave Collins were the most prominent players traded today in a busy session at baseball's winter meetings.

The Los Angeles Dodgers got Sundberg, 31, a six-time Gold Glove catcher, for Hooton, 32, a pitcher who missed most of last season because of knee surgery, plus reliever Dave Stewart and two minor leaguers.

Sundberg is regarded as one of the finest fielding catchers. But he hit only .251 last season, after four straight seasons at .270 or better.

The Cleveland Indians traded Hayes, a former minor league infielder who played right field last season, to the Philadelphia Phillies for second baseman Trillo, outfielder George Vukovich, shortstop prospect Julio Franco, plus two other rookies, Gary Willard and pitcher Jay Baller.

In a later deal, the Indians sent infielder Larry Milbourne to the Phillies for a player to be named.

Trillo, 32, a three-time all-star, set three fielding records last season. He was expendable because his contract will expire at the end of next season. Trillo hit .271 last season.

The New York Yankees sent Collins, right-handed pitcher Mike Morgan, a minor leaguer and cash to the Toronto Blue Jays for reliever Dale Murray, left-handed pitcher Jerry Garvin and a minor leaguer. Then when Garvin said we wouldn't go, the Yankees sent him back to Toronto.

When the Yankees signed Collins as a free agent last year at about $800,000 annually, he was to epitomize a new Yankee philosophy of speed rather than power. But he played only 111 games, stole 30 bases and hit .253.

Murray, 32, was 8-7 last season with a 3.16 ERA and 11 saves.

The Chicago Cubs traded Henderson to the Seattle Mariners for Rich Bordi, a young pitcher. Henderson batted .233 in 92 games last season, with 29 RBI and two homers. Bordi, 23, was 12-9 with Salt Lake City and 0-2 with the Mariners last season.

Mariners Manager Rene Lachemann said the need for another outfielder became acute when Bruce Bochte retired and it appeared that the team would lose free agent Al Cowens. The Mariners still are trying to sign Cowens.

Earlier in the day, the Yankees signed their second major free agent in a week: outfielder Steve Kemp agreed to a five-year contract worth at least $1.1 million a year.

The Baltimore Orioles had sought Kemp and Hayes, but George Steinbrenner, the Yankees owner, outbid Baltimore for Kemp by $200,000 a year.

Hank Peters, Baltimore's general manager, and Edward Bennett Williams, the team's owner, accused Dick Moss, Kemp's agent, of playing one team against the other to increase the Kemp's contract price. As late as last Saturday, the Orioles felt sure they would sign Kemp.

Hayes hit only .250 for the Indians in '82 but had 82 RBI and 14 homers.

Vukovich became the Phillies' right fielder against right-handed pitching in late June and finished with a .272 average, 42 RBI and six homers.

Franco, 22, was considered untouchable until the Phillies signed Ivan DeJesus to a five-year contract.

Yesterday's Trades

NEW YORK-TORONTO: Yankees obtain RHP Dale Murray (8-7, 11 saves, 3.16 ERA), OF Tom Dodd. Blue Jays obtain OF-1B Dave Collins (.253), RHP Mike Morgan (7-11, 4.37 ERA), 1B Fred McGriff.

LOS ANGELES-TEXAS: Dodgers obtain C Jim Sundberg (.251). Rangers obtain RHP Burt Hooton (4-7, 4.03 ERA), RHP Dave Stewart, RHP Orel Hershiser, OF Mark Bradley.

PHILADELPHIA-CLEVELAND: Phillies obtain OF Von Hayes (.250, 14 HR, 82 RBI, 32 SB). Indians obtain 2B Manny Trillo (.271), OF George Vukovich (.272, 42 RBI), SS Julio Franco, C Gary Willard, RHP Jay Baller.

PHILADELPHIA-CLEVELAND: Phillies obtain 2B-SS Larry Milbourne (.275). Indians obtain a player to be named.

CUBS-SEATTLE: Chicago obtained OF Steve Henderson (.233). Mariners obtained RHP Rich Bordi.