Gus Frerotte agreed to terms with the Minnesota Vikings yesterday, ending their search for a veteran backup to quarterback Daunte Culpepper.

Frerotte joins his fifth team and enters his 10th NFL season. He spent last year with the Bengals, completing 44 of 85 passes for 437 yards, a touchdown and five interceptions in four games.

Frerotte replaces Todd Bouman, who was traded to New Orleans for a sixth-round pick. Shaun Hill, a rookie last year from Maryland, is the No. 3 quarterback.

Frerotte, who has started 62 career games, had his best seasons with the Redskins from 1995 to '97. He passed for 3,453 yards in 1996 and threw 17 touchdown passes in 1997. . . .

Free agent wide receiver Kevin Dyson agreed to a one-year contract with the Carolina Panthers. Dyson, who left the Titans after five seasons, joins Ricky Proehl in a revamped Carolina receiving corps. Proehl, a former Ram, signed a three-year deal Monday.

Horse Racing

Composure Retired

The filly Composure was retired because of a crack in her right front leg, leaving trainer Bob Baffert without one of his Kentucky Derby contenders.

Owned by Bob and Beverly Lewis, Composure won four of eight career starts, including a three-quarter length victory in the Santa Anita Oaks on March 8 in her last start.

Baffert was considering Composure for the Derby on May 3. Just 38 fillies have run in the Derby and only three have won, the last being Winning Colors in 1988.

Other Derby contenders knocked off the trail with injuries include Vindication, Toccet and Sky Mesa, the three top 2-year-old males from last year. . . .

Hall of Fame jockey Julie Krone said she expects to return from a broken back by the start of the Del Mar meet on July 23. Krone broke two bones in her back March 8 when her mount fell leaving the gate in a race.

Soccer

Three Spots Filled

Inter Milan, Valencia and Ajax Amsterdam earned the final three spots in the European Champions League quarterfinals, while Arsenal, Newcastle and AS Roma were eliminated.

The results gave Italy and Spain three teams each in the final eight, joined by Manchester United and Ajax.

Inter (3-1-2) won, 2-0, at Germany's Bayer Leverkusen (0-6). Martins Obafemi, an 18-year-old Nigerian, scored his first goal for Inter and celebrated with five flips. Martins then fed Emre Belozoglu for the second goal.

Two other Italian teams are in the quarterfinals, AC Milan and Juventus of Turin. The draw is Friday.

Barcelona (5-0-1), which already had qualified, won, 2-0, at Newcastle (2-3-1) in the other Group A game on goals by Patrick Kluivert and Thiago Motta.

Valencia (2-1-3) advanced from Group B with a 2-1 win over visiting Arsenal (1-1-4). John Carew scored in the 34th and 57th minutes for the Spanish team, which overcame Thierry Henry's goal in the 49th for Arsenal. Ajax (1-0-5) advanced with a 1-1 tie at AS Roma (1-3-2), finishing a point ahead of Arsenal. . . .

D.C. United announced that all 30 regular season games will be carried on WMET-1150, marking the first time its matches will be carried live in English. The MLS team will also continue to have games broadcast on Spanish language stations. . . .

Los Angeles Galaxy midfielder Mauricio Cienfuegos, one of MLS's most productive playmakers, plans to retire at the end of this season.

Hockey

Vanbiesbrouck Shelved

Former NHL star John Vanbiesbrouck was suspended indefinitely from a junior league for using a racial slur to describe a black player on his team. The Ontario Hockey League also fined his team, the Sault Ste. Marie Greyhounds, $50,000. Vanbiesbrouck had resigned as coach.