In 1983 Mullins was back as a midfield marshal as 'the Dubs' took on reigning All-Ireland champions Offaly in the Leinster final. A five-point victory on that occasion gave him a seventh provincial winners' medal, a truly remarkable achievement after his accident. A thrilling draw and a replay against Cork allowed Dublin to advance to an All-Ireland final meeting with Galway. Both sides played on a day when the rain spoilt what has gone down in history as the dirtiest championship decider ever played. Barney Rock scored an opportunist goal ten minutes into the game when a Galway kick-out found him unmarked. Ray Hazley, Kieran Duff and Mullins were all sent-off for Dublin while Galway's Tomás Tierney was also dismissed. In spite of this Dublin's 'twelve apostles' hung on to secure a 1–10 to 1–8 victory and a fourth and final All-Ireland winners' medal for Mullins.