I suppose there is always a chance that Austin Wynns will re-sign with Giants on a minors deal but right now the only major-leaguer on the roster is Joey Bart. The backups are all minor-leaguers. Here's a quick run-down of the key remaining free agent backstops:
Jorge Alfaro, 29-year old RH from Colombia, 478 G (409 C), 1658 PA, .256/.305/.383;
Robinson Chirinos, 38-year old RH from Venezuela, 714 G (668 C), 2457 PA, .226/.319/.419;
Sandy León, 33-year old SH from Venezuela, 533 G (497 C), 1685 PA, .