Manchester United's Alejandro Garnacho and Kobbie Mainoo have become the first teenagers to score in an FA Cup final since Cristiano Ronaldo in 2004.

In the first half of Saturday's FA Cup final against Manchester City, 19-year-old Garnacho capitalised on a mix-up between Stefan Ortega and Josko Gvardiol to become the first teenager to net in the competition's showpiece match since Ronaldo did against Millwall in 2004, also for the Red Devils.

Garnacho's goal made him the third teenager to score for United in an FA Cup final after Ronaldo 20 years ago and Norman Whiteside back in 1983.

Then, just nine minutes later, a brilliant United move ended with Bruno Fernandes laying Garnacho's pass into Mainoo, who coolly finished to double United's lead at just 19-years-old.

Mainoo's finish means United hold a 2-0 lead at half-time against the Premier League champions, while it's also the first men's FA Cup final to see two different teenagers net. Aged just 19 years and 36 days, Mainoo is the youngest English goalscorer in the game since John Sissons for West Ham in 1964.

Mainoo is also the first English teenager to score in an FA Cup final since Steve MacKenzie for City against Tottenham in 1981.