The UFC has added four more fights to UFC Fight Night 51. Gleison Tibau Vs. Piotr Hallmann in a lightweight bout and then Godofredo Pepey takes on Dashon Johnson at 145.

Gleison Tibau (29-10 MMA, 14-8 UFC) has 3 knockouts, 12 submissions and 14 decision victories in his MMA career. He has been in the UFC since 2006 when he made his debut against Nick Diaz which he lost via 2nd Rd TKO. He is 2-2 in his last four fights, he lost to Evan Dunham via split decision in February of 2013, he beat John Cholish via 2nd Rd guillotine choke. In August he followed up with another win over Jamie Varner via split decision. In his next fight he lost to Michael Johnson back in December via 2nd rd knockout. He is coming off a win over Pat Healy at UFC Fight Night 45.

Piotr Hallmann (15-2 MMA, 2-1 UFC Has seven knockouts, six submissions and one decision victories in his MMA career, he has been knocked out once and lost by decision once. Prior to joining the UFC, he was on a nine fight winning streak. He made his UFC debut against Francisco Trinaldo, which he won by submission at UFC Fight Night – Teixeira vs. Bader on Sep / 04 / 2013. However he lost his next fight and broke his ten fight winning streak against Al Iaquinta via unanimous decision at UFC Fight Night – Machida vs. Munoz on Oct / 26 / 2013. He is coming off a win over Yves Edwards at UFC Fight Night 45.

UFC Fight Night 51 goes down Sept. 13 at Nilson Nelson Gymnasium in Brasilia, Brazil. The event will air on UFC Fight Pass. The main event will be Andrei Arlovski vs. Antonio Silva.

Here is how the rest of the card looks like:

Andrei Arlovski vs. Antonio Silva
Piotr Hallmann vs. Gleison Tibau
Dashon Johnson vs. Godofredo Pepey
Lukasz Sajewski vs. Leonardo Santos
Sergio Moraes vs. Santiago Ponzinibbio
TBA vs. Paulo Thiago
Igor Araujo vs. George Sullivan
Jessica Andrade vs. Valerie Letourneau
Efrain Escudero vs. Francisco Trinaldo
Johnny Bedford vs. Rani Yahya