Brian Teacher of the United States is a former right-handed player who competed on the ATP tour from 1971 to 1986. He won 8 tour-level singles titles, including 1 Grand Slam title, from a career match record of 333–237 (58.4%). His strongest surface by win rate was grass, where he went 81–46 (64%). His best three-year stretch came in 1980–1982, and he reached a peak Elo rating of 2137. His most frequent opponent was Roscoe Tanner, whom he faced 12 times with a record of 3–9.
Titles include Slams, Masters, Tour Finals, 500s, 250s, legacy tour events and Olympic gold; Davis Cup is excluded, and walkovers are excluded from all win–loss records. GOAT points value every round reached, scaled per tier (Slam title 2000 anchor; ranking includes Slam champions only, but every player's points are shown here). Elo is a chess-style rating over the full match history (K = 250/(n+5)^0.4); the timeline shows pre-match ratings, sampled. The gold band on the season chart marks the best three-consecutive-year window.