Trent Alexander-Arnold's Champions League debut for Real Madrid lasted just five minutes having been forced to go off injured.
The England international was handed a start by Xabi Alonso for Los Blancos' opening league phase match at the Bernabeu on Tuesday night.
But the right-back immediately appeared to pull a hamstring and had to be taken off.
Dani Carvajal was brought on for the former Liverpool defender, who limped down the tunnel.
It was a heartbreaking moment for the defender, who now faces a spell on the sidelines.
There are some huge fixtures coming up for Real Madrid, including a possible Anfield return for Alexander-Arnold, but as of now, that could be be in doubt.
Discussing his knock on talkSPORT commentary, broadcaster Adrian Durham said: "Well, Trent was lookin