Tags: Swimmer.
Mary Terstegge Meagher Plant (born October 27 1964) is an American former swimmer Olympic champion and world record-holder. In 1981 she bettered her own existing world records in the 100-meter butterfly (57.93) and 200-meter butterfly (2:05.96). These times that would stand as the respective world records for 18 and 19 years and are considered to be among the greatest sports performances ever.