Effective immediately. Wait a second. A.J. Hinch? Late ’90s catcher-of-the-future A.J. Hinch? The guy who put up a 328/420/568 minor league line in 1997 and was at one point a top-50 prospect? Hinch, you will recall, arrived in Oakland in 1998 in the same position-player bumper crop that yielded Eric Chavez, Miguel Tejada, Ben Grieve, ...