Born in Eagle Pass, Texas, Mackey began playing baseball with his brothers Ray and Ernest on the Luling Oilers, a Prairie League team, in 1916 in his hometown of Luling, and joined the professional San Antonio Black Aces two years later.
Mackey was born in Eagle Pass. Mackey began playing baseball with his brothers Ray and Ernest on the Luling Oilers in 1916 in his hometown of Luling. Mackey joined the professional San Antonio Black Aces two years later. The Luling Oilers were a Prairie League team. Eagle Pass was Texas.