 Kelley signed with the Toronto Maple Leafs of the Class – AA International League (IL) in 1907, receiving a $ 5,000 salary ($ 126,982 in current dollar terms), the highest for a minor league player to date. Kelley batted .322 for the Maple Leafs as a part-time player, spending time in left field and first base. The Maple Leafs won the IL pennant that season.
