BASEBALL Free Agents -- Mike Witt, who had a 16-14 record for the California Angels this past season, became one of four players to file for free agency. Others filing were OF Dave Collins of Cincinnati, P Gene Garber of Kansas City and P Jerry Reuss of California. Los Angeles Dodgers -- IF Phil Garner and OF Ken Landreaux won't be offered contracts for 1988, the team announced.

FOOTBALL Atlanta Falcons -- Signed top draft pick Chris Miller to a five-year, $2.8 million contract, ending months of frequently bitter negotiations with the former Oregon quarterback. Los Angeles Rams -- Said RB Charles White, who was charged in August with being under the influence of a controlled substance, has been placed in a rehabilitation program.

BASKETBALL Denver Nuggets -- Elston Turner, a reserve G with the team in 1984-86, has signed a free-agent contract. Turner is viewed as insurance because Gs Mo Martin and Mike Evans are out indefinitely with injuries.

HOCKEY New York Rangers -- Recalled LW Mike Donnelly from Colorado. Philadelphia Flyers -- Signed LW Nick Fotiu.

SWIMMING Alex Baumann, the Canadian who won gold medals in the 200- and 400-meter individual medleys at the 1984 Los Angeles Olympics, announced his retirement from competition.

AUTO RACING Stocks -- Jimmy Hensley broke a 7-year-old track qualifying record in Martinsville, Va., in winning the pole for Sunday's 200-lap Busch Grand National portion of the $167,000 Winston Classic triple-header. Hensley guided his Buick around the speedway's .526-mile oval at 92.774 mph, surpassing the 92.737 lap turned in by Geoff Bodine in 1980.