Chelsea suffered an FA Cup fourth-round scare on Saturday when they had to come from behind and needed extra time and a penalty save to beat League One Plymouth Argyle 2-1 with goals from Spaniards Cesar Azpilicueta and Marcos Alonso.

Plymouth shocked the Premier League side when defender Macaulay Gillesphey nodded the ball home from a free kick in the eighth minute.

Chelsea coach Thomas Tuchel had tested positive for Covid-19 and missed the game.

Manchester City overcame an early wobble as Riyad Mahrez struck twice to help them ease past second-tier Fulham 4-1 at the Etihad Stadium.

Manchester United were dumped out of the fourth round by Championship side Middlesbrough 8-7 on penalties after wasting a sackful of chances in a 1-1 draw at Old Trafford on Friday.

Ralf Rangnick’s side dominated throughout but ultimately paid for their profligacy in a tense shoot-out when, after the first 15 penalties had all been converted, Anthony Elanga blazed over to send 9,000 Boro fans wild.

Jadon Sancho’s 25th-minute goal, shortly after Cristiano Ronaldo had missed a penalty, was scant reward for United’s superiority with Ronaldo and Marcus Rashford both culpable of failing to take golden chances.

Chris Wilder’s Boro kept themselves in the tie, however, and equalised in the 64th minute when former United youth player Matt Crooks converted from close range.

Bruno Fernandes somehow struck the post with the goal gaping soon after that and United then battered away at Boro’s defence in extra time all to no avail.

Boro then showed incredible poise with their penalties to send the 12-time FA Cup winners tumbling out.