Originally released in 1965, the Duncan Sportsline was the last product line of yo-yos released by the original Duncan company before it was purchased by Flambeau, Duncan's parent company since 1967.
The Sportsline was a Duncan product line of novelty yo-yos shaped like balls from favorite pastimes in the United States. Besides the baseball yo-yo, Duncan made other ball-shaped yo-yos including the basketball, eight ball, bowling ball, and golf ball.
