Summary:
Brazil's star footballer Hulk has been ruled out of Saturday's World Cup qualifier against Mexico after he left the pitch looking dismayed.

Full article:
By . David Kent . Brazil's starting striker Hulk has left the team's training session with an apparent muscle injury in his left leg. Hulk, who started alongside Neymar and Fred in the tournament opener against Croatia, practiced for less than 15 minutes on Sunday when he felt something in his leg and left the field. He was walking without a limp, but then sat down on a bench and lowered his head in apparent dismay. A few moments later, he went to the locker room accompanied by one of the team's doctors. Doubt: Hulk (right) lasted just 15 minutes in Brazil training before leaving the pitch looking dismayed . Taking on: Hulk worried the Croatian defence on Thursday with his direct running and powerful play . Support: The Porto forward has been playing alongside centre-forward Fred and Brazil's super-star Neymar . Blow: Losing Hulk would be a significant problem for Brazil, who face Mexico in a tough clash on Tuesday . The Brazilian federation is yet to comment on the injury, which apparently happened after he scored a goal during the session. The injury came in one of the team's final practices before Tuesday's potentially tricky match against Mexico in Group A. Brazil will travel to the northeastern city of Fortaleza on Sunday afternoon.