Ralph Hasenhuttl hailed 'fantastic' third-choice goalkeeper Willy Caballero's heroics following his pivotal role in his side's fortuitous extra-time victory over Coventry.
And now the 40-year-old Southampton keeper could keep his place for the fifth round after he starred in their win from behind.
Kyle Walker-Peters' 112th-minute deflected strike completed their comeback, after Stuart Armstrong's second-half stunner cancelled out a Viktor Gyokeres first-half opener.
Coventry will rue their luck and on another day would have won if not for Caballero's defiance.
'He was absolutely fantastic, I'm very happy.