Melvin tried to hire Aldrete as the A 's batting coach three years ago .
The Cardinals wanted to keep Aldrete and new St. Louis manager Mike Matheny elevated Aldrete to bench coach in 2012 .
Melvin tried to hire Aldrete as the A 's batting coach three years ago , but the Cardinals wanted to keep him and new St. Louis manager Mike Matheny elevated Aldrete to bench coach in 2012 .