The 18-year-old still has a bright future ahead of him... and Liverpool have a certain Spanish left-back (not Jose Enrique!).
An ACL injury is one of the worst you can experience in football. So, both for Liverpool and Joe Gomez, the fact he has suffered one is very bad news indeed.
But it's no disaster for the Anfield outfit - or the man himself.
Indeed, at 18, Gomez still has a very bright future ahead of him. Aaron Ramsey broke his leg and came back stronger, while Luke Shaw (also out with a broken leg) will no doubt do the same.
The only thing Gomez has lost is time. But the invaluable experience he has already gained with Liverpool and the England Under-21s will leave him with a huge appetite for more - something he can utilise during his rehab.
As Jonathan Wilson has detailed on Sky Sports, the new Liverpool manager likes his full-backs to bomb forward.
And, in Moreno, the Reds have a left-back who never does anything but bomb forward. In truth, he is a left-winger in disguise and that desire to get forward has cost him many, many times defensively.
That attacking instinct is perfect for the Klopp system, though, with Nathaniel Clyne the same down the other flank. The German will have to sort Moreno out defensively, of course, but he'll be confident he can get the best out of anyone.
Gomez's loss will be felt, then, but it won't be the end of the world. He will come back older, stronger and wiser.