Hector Bellerin has been ruled out of Arsenal's London derby against West Ham United tonight.
The Spaniard, who only recently returned from a long injury layoff, was named in the Gunners' starting line-up at the London Stadium in a back four alongside Calum Chambers, Sokratis and Kieran Tierney.
However, minutes before kick-off it was announced that Bellerin sustained a knock during the warm-up and will play no part against the Hammers.
Sky Sports images showed the defender feeling his hamstring and no risks has been taken with games against both Manchester clubs, Everton and Chelsea on the horizon.
His place in the team has gone to Ainsley Maitland-Niles who began the season as the first-choice right-back, but hasn't played much football since admitting it's not his favoured position.
"Only time will tell and of course I want to play as many games as I can," he told Sky Sports. "I want to stay in the team, but if the manager chooses to pick him over me, that's something I will have to live with.
"I'll just have to keep training and working hard so that I get picked instead.
"I'm a midfielder by trade, either central or on the wing, it's all the same to me.
"I'm not a defender so I do get a lot of stick about my defending being poor, but it's something I'm learning and have been learning for a couple of years now.
"It's not going to come overnight. If I was a defender as a kid, and my defending was poor, I would understand where the criticism is coming from, but I'm trying my best for the team and for the manager.
"It's not where I would choose to put myself in the team, as I'm an attacking player by trade.
"That's all I can try to bring to the team.
"I'm still learning the defensive side, so when players are running at me, and they're throwing skills at me, I'm still learning how to deal with that.
"It's always nice to have one main position where you play, and everyone else gets to play in their main position, so hopefully it's just a matter of time before I can do that too."
