Lamine Yamal injury update: Latest news as Spain star has World Cup worry after taking Barcelona penalty

It appeared to be a hamstring issue, as he received treatment on his dominant left leg with which he took the penalty.

It was a significant worry ,not just for Barcelona, who are in the hunt for the La Liga title, but for the Spanish national team as well.

How long will Lamine Yamal be out?

It's unclear how much time Lamine Yamal will miss until tests have been completed, but there is a worry that he could miss a number of matches for Barcelona.

A Grade 1 hamstring strain would see him miss just a week or two, with matches against Getafe and Osasuna to come next on Barcelona's fixture list.

If the injury were worse, a Grade 2 hamstring strain would see him sidelined for four to six weeks, which would mean his Barcelona campaign is done but the World Cup could be in play.

The worst-case scenario would be a Grade 3 hamstring strain, which is a full tear of the muscle. This would almost certainly require surgery, and could keep him out of the FIFA World Cup.

Will Lamine Yamal play at the FIFA World Cup?

Spain national team coach Luis de la Fuente and La Roja fans will be holding their collective breath while tests are conducted on the injury to Lamine Yamal.

If the injury is minor, Lamine would be able to return over the next few weeks and should be fit to participate in the World Cup.

If, however, the injury is of the more serious variety, he would be unlikely to participate in the World Cup, which would be an extremely significant blow to Spain's chances of making a deep run in the competition.

Earlier in the same day, news had been announced that Chelsea youngster Estevao had suffered a serious hamstring injury, reportedly a "near-complete tear," which has put his own World Cup hopes in significant doubt.