Question: The 1993 US National Champion was coached by what male?
Context: Yasuhiko Nagatoshi is a former US national champion in judo.  In the 1967 US National Championships, Nagatoshi won grand champion and the gold medal in the under 80 kg division.  He was a bronze medalist in the 1968 National Championships. Mary Batdorf Scotvold is an American figure skating coach, best known for her work with Olympic medalists Paul Wylie and Nancy Kerrigan, whom she co-coached with her husband, Evy Scotvold. Sam Kendricks (born September 7, 1992) is an American track and field athlete, known primarily for the pole vault.  He is the 2014, 2015 US Indoor National Champion, 2015 US National Champion, 2016 US Indoor National Champion, 2016 US National Champion while setting the US Olympic Trials pole vault record.  and the 2017 World Champion.  Kendricks is also a second lieutenant in the United States Army Reserve. Jevon Tarantino (born January 30, 1984) is an American springboard diver.  He is a member of the Fort Lauderdale Diving Team and is coached by David Burgering.  He was a member of the US National Team for seven years(2001–2008).  He represented the United States at the 2008 Olympic Games.  He is a five-time Junior National Champion, a four-time Senior National Champion, the 2004 SEC Champion (University of Tennessee), the 2004 NCAA Champion (University of Tennessee), and a member of the 2005 and 2006 World Championship teams. Lisa Ervin (born April 20, 1977) is an American former figure skater.  She won three consecutive silver medals at the World Junior Figure Skating Championships from 1991 to 1993 and is the 1993 US National silver medalist.  She was coached by Carol Heiss Jenkins and originally trained by Melissa Smith at the Charleston Civic Center Ice Arena.  Due to an eating disorder, she chose to retire from competitive skating.  Her decision to stop skating is profiled in Christine Brennan's book "Inside Edge: A Revealing Journey into the Secret World of Figure Skating". TJ Curry (born August 10, 1987) is the current US National Team Welterweight and 2013 US National Welterweight Champion, 2010 US National Champion, and 2011 Pan American Games US Team member in taekwondo.  Curry was the 2012 USA Olympic Team Alternate to Steven Lopez in the 80 kg division.  Curry was selected as the US Welterweight fighter for the 2013 SportAccord World Combat Games Team.  Curry is the World Taekwondo Center's Team Captain and is coached by Brian Singer in Oakland, California. Nancy Ann Kerrigan (born October 13, 1969) is an American former figure skater.  She won bronze medals at the 1991 World Championships and 1992 Winter Olympics, and a silver medal at the 1992 World Championships, before becoming the 1993 US National Champion. Shiro Oishi, born in 1942, is a former US National Champion in judo.  In the US National championships, Oishi earned a Silver medal in 1966 and a Gold in 1969.  He is also a former national wrestling champion. Alfred Sauer (July 31, 1880 – November 11, 1943) was an American fencer.  US Fencing Hall of Famer Sauer was the US national champion in foil in 1916.  He was the US national champion in Épée in 1913.  He was also a member of the 1912 US Olympic fencing team.  He competed in three events at the 1912 Summer Olympics. Diane Pierce Tudela is a former 3 time US National Champion in Judo.  She has been considered a top 10 female competitor in Judo regardless of weight class.  She competed and earned Gold Medals in the 1974, 1975, and 1977 US National Championships.  She earned a bronze in the US National Championships 1978 as well.  She married fellow Judoka Miguel Tudela.  She was well known for her Arm Bar.  She currently serves as a coach in the US Judo Training Center.
Answer: Evy Scotvold