Manchester United avoided a potential catastrophic collapse as they edged out Chelsea 2-1 in a frenetic 10v10 Premier League battle at Old Trafford.
The torrential rainfall was a precursor to a turbulent first half at the Theatre of Dreams, which saw two goals, two red cards and an unprecedented three substitutions before the break.
The chaos began with Robert Sanchez taking the walk of shame for a last-man foul on Bryan Mbeumo; Enzo Maresca responded to his goalkeeper's dismissal by taking off 75% of his attacking line, as Estevao, Pedro Neto and Cole Palmer - now a fresh injury concern - all came off inside the opening 21 minutes.
Ruben Amorim 's men capitalised on Chelsea's implosion through Bruno Fernandes 's milestone goal and a close-range header from Casemir