He was released by the Pirates during spring training in 1976 .
Mercer was drafted by the Pittsburgh Pirates in the 1st round of the secondary phase of the 1973 amateur draft out of Hill College .
Mercer was released by the Pittsburgh Pirates during spring training in 1976 .
Mercer was drafted by the Pittsburgh Pirates in the 1st round of the secondary phase of the 1973 amateur draft out of Hill College .