Officials have started to work on the lineup for UFC Fight Night 51, which takes place September 13 from Brasilia, Brazil.

Along with a previously announced main event between Antonio Silva and Andrei Arlovski, four more bouts have been added.

Lightweights Leonardo Santos and Lukas Sajewski will meet, along with three welterweight bouts. Those pit Sergio Moraes vs. Santiago Pozinibbio, Paulo Thiago vs. Mike Rhodes and George Sullivan vs. Igor Araujo.

Thiago earned himself another shot in the UFC despite going just 2-6 in his last eight, while his opponent, Rhodes, has lost both of his Octagon fights since coming over from Resurrection Fighting Alliance.

The Thiago-Rhodes and Sullivan-Araujo bouts were first confirmed by

Below is the list of current fights announced:

Heavyweight: Antonio Silva vs. Andrei Arlovski

Lightweight: Leonardo Santos vs. Lukas Sajweski

Welterweight: Sergio Moraes vs. Santiago Ponzinibbio

Welterweight: Paulo Thiago vs. Mike Rhodes

Welterweight: George Sullivan vs. Igor Araujo