Blackburn Rovers had previously earned a reply to host the Premier League side and despite coming back from two goals down were on the wrong side of the result.
21-year-old Sean Longstaff opened the scoring for Newcastle with a deflected long range effort deceiving Blackburn keeper David Raya.
Another 21-year-old Callum Roberts scored Newcastle’s second. After that, former Newcastle striker Adam Armstrong got Blackburn back into the game, poking the ball passed Freddie Woodman. Darragh Lenihan heading the sides level just before the break.
What a cup-tie this is 🙌— Football on BT Sport (@btsportfootball) January 15, 2019
Armstrong ⚽️ '33
Lenihan ⚽️ '45+1
Blackburn looked dead and buried but have been brilliant since going 2-0 down...
📺 BT Sport 2 HD pic.twitter.com/ovJJXO6b9F
Joselu scored in extra time to edge Rafa Benitez’s side ahead although he looked offside.
A strong strike from a tight angle by Ayoze Perez secured the win for Newcastle. Rafa Benitez spoke to BT Sport after said "The young players did well, and the main thing was that everybody was giving 100% for each other”.
Ayoze Perez with no support... Who needs support? 🤷♂️— Football on BT Sport (@btsportfootball) January 15, 2019
What a finish 👌
Newcastle make it 4-2 after Joselu put the visitors back in front in controversial circumstances...
It's harsh on Blackburn, but Newcastle are in touching distance of the 4th round. #FACup pic.twitter.com/tTaBxQCyAX
This was Newcastle’s first win in seven games in all competitions. It’s only their sixth ever win in the FA Cup under club owner Mike Ashley since 2007.
Newcastle’s next game is a must win home fixture in the Premier League against relegation rivals Cardiff City.
Next Round✅ pic.twitter.com/aLXJPsAoIX— Joselu Mato (@JoseluMato9) January 16, 2019