He was a seven-time United States champion and briefly held the indoor world record in men's weight throw.
Like his fellow hammer thrower Don Favor, Irving Folwartshny was an alumnus of Deering High School in Portland, Maine.
[15] In addition, he became national (AAU) outdoor champion for the first time, throwing the hammer 173 ft 7+5⁄8 in (52.92 m) and beating runner-up Bill Lynch by seven feet.
[11] After the American season Folwartshny toured Europe with a number of other athletes;[20] he set his personal best of 56.17 m (184.3 ft) 3+3⁄8 in) in Osnabrück on August 21, although he still only placed second to Germany's reigning Olympic champion Karl Hein.
[11] The streak ended that year, however, as he no longer placed in 1947; Folsworth retired from competition before the 1948 season, not pursuing selection for the Olympics in London.