- Performance of the night: 4x
- Nickname: Gunni
- Fights Out Of: Reykjavik
- Age: 28
- Height: 5'11"
- Weight: 170.0 lbs
- Weight Class: Welterweight
- Striking: 21%
- Submissions: 49%
- Takedowns: 30%
- Summary: Submissions
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UFC Fight Night: Manuwa vs. Anderson - Mar 18, 2017
Win vs. Alan Jouban (Performance of the night)
UFC Fight Night: Overeem vs Arlovski - May 08, 2016
Win vs. Albert Tumenov (Performance of the night)
UFC 194: Aldo vs McGregor - Dec 12, 2015
Loss vs. Demian Maia
UFC 189: Mendes vs McGregor - Jul 11, 2015
Win vs. Brandon Thatch
UFC Fight Night: Nelson vs Story - Oct 04, 2014
Loss vs. Rick Story
UFC Fight Night: McGregor vs Brandao - Jul 19, 2014
Win vs. Zak Cummings (Performance of the night)
UFC Fight Night: Gustafsson vs Manuwa - Mar 08, 2014
Win vs. Omari Akhmedov (Performance of the night)
UFC on FUEL TV: Barao vs McDonald - Feb 16, 2013
Win vs. Jorge Santiago
UFC on FUEL TV: Struve vs Miocic - Sep 29, 2012
Win vs. DaMarques Johnson