Buffalo After graduating, Swede was operating a candy store in
Hanover, New Hampshire, with Dartmouth teammate
Ed Healey when he was approached by representatives from Buffalo with an offer to play for their 1920 team in the new American Professional Football Association (renamed the National Football League in 1922). During his first season with the All-Americans, Youngstrom is reported to have blocked nine punts, the same number of blocks he attained during his senior year at Dartmouth. Three of those blocks were returned for
touchdowns. In 1922, Youngstrom's play began to attract
All-Pro mention. In 1923 the All-Americans went 5–4–3, but Youngstrom's stellar play earned him a spot on the
Green Bay Press-Gazette All-Pro team. A year later, Swede ended up being the only bright spot for the Buffalo franchise (now called the Bisons) during terrible season, receiving All-Pro honors for the third consecutive year.
Frankford Yellow Jackets In 1926, Youngstrom accepted an offer to play for the Frankford Yellow Jackets. In addition to his duties on the field, Swede was asked to coach the linemen. He spent two seasons with the Jackets, and played a major role in helping the team win the 1926 NFL title. He would then serve as the team's player-coach for the 1927 season. ==Independent football==