Liverpool and Manchester United played out their second draw in the Premier League this season, but this was a contest of far greater intensity, drama and tactical interest than the drab 0-0 at Anfield in October.
Jurgen Klopp switched to a 4-4-2 diamond in which Adam Lallana marked Michael Carrick and Divock Origi challenged Phil Jones, but their best chances came via set-pieces and defensive errors, such as when Paul Pogba's handball allowed James Milner to convert from the spot.
There were fewer surprises from Jose Mourinho, who stuck to his 4-3-3, but United had the better chances in the first half via incisive passes through the backline.