Brazil striker Hulk has emerged as an injury doubt for Tuesday's World Cup clash with Mexico after limping out of training.

The 27-year-old suffered a problem with his left leg during the team's session on Sunday afternoon.

Brazilian coach Luiz Felipe Scolari is yet to confirm whether the forward will miss the host nation's encounter with the Mexicans in Fortaleza.

The Selecao head into the match having won their opening fixture of the tournament 3-1 against Croatia.