George Head's last-second try gave Harlequins a dramatic 26-24 victory over local rivals London Irish in a match at the Twickenham Stoop that featured two red cards.
The Exiles were trying to lift themselves off the bottom of the Gallagher Premiership and saw a 14-0 half-time lead cancelled out before regaining the advantage in the closing stages through Paddy Jackson's penalty.
