He was the first person in the history of the IAAF World Championships in Athletics to win three consecutive 110 meters hurdles titles (1983, 1987, and 1991).

Foster broke the world indoor record for the 50 meters hurdles in 1985 (6.35 seconds) and tied that mark in 1987.

[2] His personal best time for the 110 meters hurdles was 13.03, run at the Weltklasse Zürich meet in 1981 in which Renaldo Nehemiah became the first man the break the 13 second barrier, with his 12.93.

[3] Foster was suspended from athletics for six months in 1990 after testing positive to ephedrine which he said was contained in his asthma medication.

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