BRASILIA, Brazil – Andrei Arlovski, Godofredo Pepey, Gleison Tibau and Piotr Hallmann each earned $50,000 bonuses for their performances at Saturday’s “UFC Fight Night 51: Bigfoot vs. Arlovski 2” event.

Tibau and Hallmann earned the “Fight of the Night,” while Arlovski and Pepey each won “Performance of the Night” honors.

MMAjunkie learned of the awards prior to the night’s post-event news conference, which MMAjunkie attended and where UFC officials subsequently confirmed the awards.

In the main event, Arlovski (23-10 MMA, 12-4 UFC) notched a stunning upset over Antonio Silva (18-6 MMA, 2-3 UFC), stopping “Bigfoot” with a first-round knockout. Silva was a 5-to-1 favorite in the fight, which was a rematch from his 2010 win over Arlovski in Strikeforce.

Pepey (11-3 MMA, 3-3 UFC) seemed to be potentially in trouble against Dashon Johnson (9-2 MMA, 0-2 UFC) when Johnson picked him up and slammed him hard to the canvas. But that gave Pepey his opportunity. He worked a triangle choke, then expertly transitioned to an armbar, rolled it over and Johnson quickly had to tap.

In the co-feature, Tibau (30-10 MMA, 15-8 UFC) and Hallmann (15-3 MMA, 2-2 UFC) battled back and forth in a close fight that Tibau seemed to control with his size – but got surprising resistance from Hallman, who also looked like he might be able to fight a weight class up. In the end, Tibau took a close split decision in front of his home fans.

UFC Fight Night 51 took place at Nilson Nelson Gymnasium in Brasilia, Brazil. The full 11-fight card streamed live on UFC Fight Pass.

For more on UFC Fight Night 51, check out the UFC Events section of the site.

(Pictured: Piotr Hallman)