Dortmund 0-0 Barcelona: 5 Things we learned from the match | UEFA Champions League 2019/2020

#1 Jordi Alba injury poses potential threat for Barca

Alba hurt his hamstring against Dortmund

If ever there was an award for an omnipresent player in the Barcelona squad over the last five seasons, it would be won by Jordi Alba hands down.

The 30-year-old has been a constant fixture in the starting lineup owing to the fact that he was the only recognized left-back in the team, and while he might have his detractors, there are few better players in that position than Jordi Alba anywhere in the world.

The arrival of Junior Firpo in the summer helped ease the pressure on the Spanish international, but the youngster's injury meant that once again, Jordi Alba reverted to type as the sole left-back in the squad.

This is a less than ideal proposition for Barcelona given the magnitude and number of games they play in a season, and their worst fears were confirmed when the former Valencia man pulled up with a muscle injury just past the hour mark against Dortmund.

He tried to shake it off for a few minutes, but soon signaled to the bench that he could not continue, and as a sign of the dire straits Barcelona face in the left-back position, Ernesto Valverde had to send on Sergi Roberto in Alba's place.

🚑 First team player Jordi Alba has hurt his left hamstring. Tests tomorrow will reveal the full extent of the injury. pic.twitter.com/MhxRyxPob4

— FC Barcelona (@FCBarcelona) September 17, 2019

A tweet by Barcelona confirmed that it was a Hamstring injury suffered by Jordi Alba, and with Junior Firpo still out of the side, the Blaugrana would have to be without a recognized left-back for the time being.