New York Giants quarterback Phil Simms, sidelined at the end of last season by a shoulder injury, underwent knee surgery yesterday and will be lost for the year, said Coach Ray Perkins.

Simms was placed on the injured list along with linebacker Dan Lloyd, who injured his right leg in training camp after winning a two-year battle against cancer.

Simms damaged two of the three major ligaments in his right knee Saturday night during the Giants' 22-10 exhibition victory over the New York Jets at Giants Stadium.

An arthroscopic examination revealed Simms' interior cruciate ligament was pulled completely from the bone and his medial collateral ligament was nearly severed.

Perkins said he is looking for a backup quarterback for Scott Brunner, who has taken over for Simms.

Mark Reed, the third-string quarterback, was the club's 1981 eighth-round draft choice and has never played in a regular-season NFL game . . .

The San Francisco 49ers waived Ricky Patton, their leading rusher last season, and fullback Johnny Davis, the team's third-leading scorer, with 42 points, and No. 3 rusher, with 297 yards. Patton led the team in rushing with 543 yards and was sixth in receiving with 27 catches.

Also, the defending Super Bowl champions, down to only one healthy quarterback, starter Joe Montana, brought veteran Gary Huff out of retirement. No. 2 Guy Benjamin suffered a concussion more than a week ago and, last Saturday, No. 3 Bryan Clark suffered an ankle injury.

Huff was San Francisco's No. 3 in 1980 but did not play. Last year, Huff retired and went to work in Florida as a certified public accountant.

In Los Angeles, federal judge Harry Pregerson delayed the damage phase of the antitrust suit against the National Football League won by the Raiders and the Los Angeles Coliseum until Nov. 1, giving lawyers more time for preparation.

Hearings had been set to begin Sept. 20.

A jury ruled in May that the NFL violated federal antitrust law by blocking the club's planned move from Oakland to the Los Angeles Coliseum, left vacant when the Los Angeles Rams switched to suburban Anaheim.