A lightweight bout has been added to UFC Fight Night 137 just less than one month away from fight night. However, as the unlucky card stands, with two fights in jeopardy because of injuries, the UFC might not have another choice.

On Tuesday, Combate reported that submission specialist Charles Oliveira will take on Christos Giagos, who is returning to the UFC.

With 15 submission wins under his belt, Charles Oliveira (23-8- 1 NC) heads into the fight after choking out veteran Clay Guida back in June. Before the victory, ‘Do Bronx’ was knocked out by Paul Felder. Should Oliveira pull off another win against Giagos, it would be the first time he won two fights in a row since December 2014 to May 2015.

Christos Giagos (15-6) is back in the UFC after a six-fight stint on the regional circuit, in which he scored four wins and suffered two defeats. During his first UFC run, which lasted from October 2014 to June 2015, he was defeat by Gilbert Burns and Chris Wade, beating only Jorge de Oliveira.

UFC Fight Night 137 is set for Sao Paulo, Brazil, on September 22. The card will be headlined by a light heavyweight bout between Jimi Manuwa and Thiago Santos, who stepped in on short notice for an injured Glover Teixeira.