Douglas Seneca Gjertsen is an American former competition swimmer, Olympic champion, and former world record-holder. Gjertsen was the third member of the record-setting U.S. team in the men's 4x200-meter freestyle relay at the 1988 Summer Olympics in Seoul, South Korea. The American team of Troy Dalbey, Matt Cetlinski, Gjertsen and Matt Biondi set a new world record with a time of 7:12.51. He also received a bronze medal for swimming for the third-place U.S. team in the preliminary heats of the men's 4x100-meter freestyle relay. Four years later at the 1992 Summer Olympics in Barcelona, Spain, he was the fourth member of the third-place U.S. team in the men's 4x200-meter freestyle relay; the American team of Joe Hudepohl, Mel Stewart, Jon Olsen and Gjertsen won the bronze medal with a time of 7:16.23. Individually, he finished eighth in the final of the men's 200-meter freestyle, recording a time of 1:50.57. He attended the University of Texas at Austin, and swam for coach Eddie Reese's Texas Longhorns swimming and diving team. He was a three-time individual NCAA champion and a nine-time relay NCAA champion. He was inducted into the Longhorn Hall of Honor in September 2006. 

July 31st, 1967 in Phillipsburg, New Jersey (Age 56)