Soccer is the big sport in his native Yugoslavia, but Bosco adapted well to the sport of baseball after moving to Akron at the age of seven. He played with various teams in his youth, developing into a hard-nosed third baseman. In 1928, he joined Speed Bosworth's General Tire team. After a brief stint with the Boston Braves organization, he rejoined Bosworth with the Yellow Cabs. While with the Akron Guards in 1930, the team played under the lights for the first time ever in Ohio. That July 30th occasion saw better than 2,000 fans in attendance. Later, Bosco played third base for the Akron Tyrites in the Mid-Atlantic League before closing out his brilliant career with the Killian Celtics.