Who is a retired American track and field athlete, who mostly competed in the shot put who returned four years later to the most populous metropolitan area in the world ?
Dallas Crutcher Long
Tokyo
Tokyo (] , ), officially Tokyo Metropolis, is the capital of Japan and one of its 47 prefectures.
 The Greater Tokyo Area is the most populous metropolitan area in the world.
 It is the seat of the Emperor of Japan and the Japanese government.
 Tokyo is in the Kantō region on the southeastern side of the main island Honshu and includes the Izu Islands and Ogasawara Islands.
 Formerly known as Edo, it has been the de facto seat of government since 1603 when Shogun Tokugawa Ieyasu made the city his headquarters.
 It officially became the capital after Emperor Meiji moved his seat to the city from the old capital of Kyoto in 1868; at that time Edo was renamed Tokyo.
 Tokyo Metropolis was formed in 1943 from the merger of the former and the .
Dallas Long
Dallas Crutcher Long (born June 13, 1940) is a retired American track and field athlete, who mostly competed in the shot put.
 Between 1959 and 1964 he set six official and five unofficial world records.
 Long attended the University of Southern California.
 He competed at the 1960 Summer Olympics, where he won a bronze medal behind fellow Americans Bill Nieder and Parry O'Brien.
 He returned four years later to Tokyo for the 1964 Summer Olympics and won a gold medal.
 Domestically he won the AAU title in 1961 and the NCAA title in 1960–62.
Maren Seidler
Maren Elizabeth Seidler (born June 11, 1951 in Brooklyn, New York) is a retired American track and field athlete.
 She dominated the shot put from the mid 1960s through 1980.
 She won the event at the USA Outdoor Track and Field Championships eleven times starting in 1967, including nine in a row from 1972 to 1980.
 She was the American champion indoors nine times, 1968-9, 1972, 1974-5 and 1977 to 1980.
 She won her event at the United States Olympic Trials four straight times 1968-1980, a feat only equalled by only one woman, Madeline Manning, Edwin Moses is the only man to achieve four.
 Jackie Joyner Kersee is the only woman who has won more events at the Olympic Trials, split between the long jump and heptathlon.
 She competed in the Olympics three times, making the final twice.
 Her 1980 selection was quashed by the 1980 Summer Olympics boycott.
 Seidler did however receive one of 461 Congressional Gold Medals created especially for the spurned athletes. Jillian Camarena-Williams
Jillian Mary "Jill" Camarena-Williams (born 2 March 1982) is a retired American track and field athlete who competes in the shot put.
 She competed at the 2012 and 2008 Beijing Olympics and has represented the United States both indoor and outdoors at World Championship-level. Gerhard Windolf
Gerhard Windolf (born January 13, 1924) is a German Masters track and field athlete.
 He was the 1995 Masters World Champion in the decathlon, beating future world record holder Pekka Penttila.
 Four years later he returned to get a bronze medal behind Penttila.
 As a combined event athlete, he also has produced medal winning results in a range of other events, primarily jumping events.
 He won the world championship in the high jump in 1995, 2005, 2009, and 2015, while getting bronze in 1991 and 1999.
 He won the long jump in 2009 and 2015, with a bronze in 1999.
 He also picked up a silver in the triple jump and shot put in 2009, with bronze medals in 2005 and 2015. Marianne Werner
Marianne Werner, née Schulze Entrup, later Ader (born 4 January 1924), is a retired West German athlete who competed mainly in the shot put events.
 She was born in Dülmen.
 Werner competed for West Germany at the 1952 Summer Olympics, held in Helsinki, Finland, in the Women's Shot Put, where she won the silver medal.
 Four years later she returned with the United Team of Germany to Melbourne for the 1956 Summer Olympics where she won the bronze medal one place behind Soviet Galina Zybina for the second Olympics and eventual winner, another Soviet Tamara Tyshkevich. Raven Saunders
Raven Saunders (born May 15, 1996) is an American track and field athlete who competes in the shot put and discus throw.
 She won three NCAA collegiate titles in the shot put for the University of Mississippi.
 She was a world junior medalist in 2014 and the Pan American junior champion in 2015.
 She holds a personal record of 19.33 m (63 ft floor(((19.33)*3.28084)−(floor((19.33)*3.28084)) *12) in) for the shot put. Neal Steinhauer
Neal Steinhauer (born August 18, 1944) is a retired American track and field athlete.
 He won a silver medal in the shot put at the 1967 Pan American Games, behind Randy Matson, and also won two medals at the 1967 Summer Universiade in Tokyo (gold in the shot put and bronze in the discus).
 A one-time American national champion (in 1969).
 Steinhauer set his personal best (21.01 m) on March 25, 1967 at a meet in Sacramento.
 He was on the cover of the February 1969 issue of "Track and Field News." Charlie Fonville
Charles Edward "Charlie" Fonville (April 27, 1927 – July 13, 1994) was an American track and field athlete who set a world record in the shot put.
 In 1945, he had been named the Michigan High School Track & Field Athlete of the Year.
 He won the National Collegiate Athletic Association (NCAA) shot put championship in 1947 and 1948.
 Competing for the University of Michigan at the Kansas Relays in April 1948, Fonville broke a 14-year-old world record, throwing the shot a foot further than the record. Randy Matson
James Randel "Randy" Matson (born March 5, 1945) is an American track and field athlete who mostly competed in the shot put.
 He won a silver medal at the 1964 and a gold medal at the 1968 Olympics.