The seventh strike of Greenwood's season means he is second top scorer for the Reds, behind Marcus Rashford, and it followed up his brace against AZ Alkmaar in the Europa League on Thursday night.
Opta have also revealed the only other teenagers to hit the net more often in all competitions, playing in one of Europe's top five leagues in 2019/20, are Borussia Dortmund's Jadon Sancho and Arsenal attacker Gabriel Martinelli.
Greenwood earned a second successive star-man accolade for his efforts, beating off competition from Aaron Wan-Bissaka and Daniel James to top the poll in our Official App.