#4. Charles Oliveira vs. Christos Giagos:
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In the final fight of the Prelims card from UFC Fight Night 137, the card had a huge one, with Christos Giagos taking on Charles Oliveira.
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Round 1: Giagos was out to shock the world by defeating Oliveira. He was jumped around and looked for the early knees to the face. Giagos pushed Oliveira back with a combination. Giagos was knocked down, but got back to his feet immediately. Oliveira missed with what could have been a disastrous right elbow. Oliveira took risks with another jump knee, as he looked to bring down his opponent. Giagos was composed, but Oliveira took him down and worked Giagos on the ground. Oliveira got full mount, but Giagos bucked him off. Giagos caught Oliveira on the nose, and looked to take advantage in the final few seconds of the first round.
Round 2: Oliveira started off with two spinning back kicks. He then launched another jump knee, into the clinch. Giagos came into the fight with a measured approach and he stuck to it. Oliveira lauched some midsection kicks,and took Giagos down. He got on the back of Giagos, and kept throwing punches. He then finished it off with a win by Submission due to the Rear Naked Choke, and got the record for the most submission wins in UFC history.
Result: Charles Oliveira defeated Christos Giagos via Submission (Rear Naked Choke, 2nd Round, 3 Minutes and 22 Seconds)