Dana Vollmer breaks World Record - Women's 100m Butterfly | London 2012 Olympics Games - YouTube
Michael Phelps sets 100m butterfly world record | Michael Phelps | The Guardian
Video, timing systems confirm Phelps' 7th gold
Caeleb Dressel wins 100 butterfly at U.S. Olympic Trials swimming
Caeleb Dressel is 2nd swimmer to break Michael Phelps record this week
2008 Olympics: Michael Phelps earns dramatic win in 100m butterfly | NBC Sports
Urgent: Dressel shatters world record to win men's 100m butterfly at Tokyo Olympics - Xinhua | English.news.cn
Zhang Yufei claims sliver of women's 100m butterfly | Sports | China Daily
Dressel and Ledecky golds tinged by relay disaster for U.S. swimmers - The San Diego Union-Tribune
Caeleb Dressel breaks 100-meter butterfly world record; Katie Ledecky cruises in 800 free - ESPN
Michael Phelps wins 100-meter butterfly at U.S. Olympic swimming trials
Tokyo Olympics swimming men's 100m butterfly final: Know who's competing and where to watch live in India
Michael Phelps wins 100-meter butterfly final at Mesa, Ariz. meet - CBSSports.com
Rikako Ikee reaches women's 100 butterfly final at nationals | The Japan Times
BRPROUD | Caeleb Dressel adds 100m butterfly gold, breaks world record
Caeleb Dressel wins another Olympic gold with world record in men's 100-meter butterfly - mlive.com
Caeleb Dressel Wins the 100-M Butterfly, Third Gold Medal and a World Record - The New York Times
Michael Phelps World Record in the 100m Butterfly Final - Rome 09 - YouTube
Caeleb Dressel breaks world record in men's 100m butterfly, wins 3rd gold in Tokyo
Men's 100m Butterfly Final | Rio 2016 Replay - YouTube
