Career
He played as a striker. Kroon began his career in Stattena IF. In 1925, he moved to the nearby club Helsingborgs IF where he made 516 appearances and scored 318 goals. He scored the winning goal (3-2) in the first round against Argentina.
Some sources consider him as the first goalscorer in the history of World Cup preliminary competition, when Sweden scored against Estonia 7 minutes into the game on 11 June 1933, in Stockholm.
Some other sources consider this goal was scored by Estonian goalkeeper Evald Tipner, thus being an own goal.