Rebecca Twigg is an American former racing cyclist , who won six world track cycling championships in the individual pursuit. She also won 16 US championships (the first - the individual time trial - when she was 18) and two Olympic medals, the Silver medal in the 1984 road race in LA, and a Bronze medal in the pursuit in Spain in 1992. Twigg won the first three editions of the Womens Challenge on the road. Twigg was a three-time Olympian (1984, 1992, and 1996). However, her final Olympic appearance, in Atlanta in 1996, ended in controversy when she quit the team in a disagreement with the coach Chris Carmichael and the US Cycling Federation. The federation had invested in the development of the so-called SuperBike". Twigg, after using the bike earlier in the Games, refused to ride it, citing poor individual fit and claiming that pressure from the staff on her to use the SuperBike and their refusal to grant accreditation to her personal coach left her defocused.