The men's 100 metre butterfly competition of the swimming events at the 1991 Pan American Games took place on 13 August. The last Pan American Games champion was Anthony Nesty of Suriname.Hickoksports Hickosports ResultsPan American Games - Swimming and Diving page, from gbrathletics.com; retrieved 2012-04-15.ISHOF list with all medalists in Pan Am Games history

This race consisted of two lengths of the pool, all in butterfly.

Results All times are in minutes and seconds.

KEY:qFastest non-qualifiersQQualifiedGRGames recordNRNational recordPBPersonal bestSBSeasonal best

Heats

Final The final was held on August 13. Rank Name Nationality Time Notes Anthony Nesty 53.45 GR Mike Merrell 54.60 Eduardo Piccinini 55.00 4 Jim Harvey 55.04 5 Jose Menéndez 55.84 6 Diego Perdomo 56.02 7 Emmanuel Nascimento 56.17 8 Giovanni Linscheer 56.21

References