Overview
- League Two Grimsby advanced 12-11 on penalties after a 2-2 draw, handing United their first loss to fourth-tier opposition in this competition.
- Grimsby led 2-0 through Charles Vernam and Tyrell Warren after early errors from André Onana, before Bryan Mbeumo and an 89th‑minute Harry Maguire header forced penalties.
- The shootout ran to 26 kicks as Onana saved from Clarke Oduor, Matheus Cunha missed a potential winner, and Mbeumo hit the crossbar to decide it.
- Amorim said his players were "completely lost" and issued an apology, with scrutiny intensifying over his system, selections and the goalkeeping situation.
- Grimsby manager David Artell called it a "terrific night" as fans celebrated with a pitch invasion, and United now face Burnley on Saturday with late window decisions looming.