Prospective Southampton boss Nathan Jones was in the stands as they beat Sheffield Wednesday 6-5 on penalties in the Carabao Cup third round.
He saw Josh Windass give League One Wednesday the lead, before James Ward-Prowse equalised from the penalty spot just before the break.
With no further goals, penalties were needed - and Dominic Iorfa's saved spot-kick meant the Saints progressed.
A run of just one win in nine games - culminating in Sunday's 4-1 loss at Newcastle - led to the sacking of Ralph Hasenhuttl as Southampton boss on Monday.
And the Saints appear to have moved quickly to replace him with Jones, who has consistently impressed at Luton - leading them to the Championship play-off semi-finals last season.