Brian Teacher, American tennis player

Brian David Teacher is an American former professional tennis player. He reached career-high rankings of world No. 7 in singles and world No. 5 in doubles, both in 1981. Teacher is best remembered for being a major singles champion, triumphing at the 1980 Australian Open. He won eight career singles titles and 16 doubles titles.

December 23 is the 357th day of the year in the Gregorian calendar; eight days remain until the end of the year.