Arman Tsarukyan weighed in at 70.76 kg and Mauricio Ruffin at 70.31 kg, both making weight for their co-main event bout at UFC 331. The lightweight matchup is confirmed to proceed as scheduled.
Both Arman Tsarukyan and Mauricio Ruffin stepped on the scales without issue Friday, clearing the lightweight limit ahead of their co-main event clash at UFC 331, scheduled for Saturday, September 19, 2026.
Tsarukyan, known by the nickname "Ahalkalakets," weighed in at 70.76 kilograms, comfortably inside the 70.76-kilogram lightweight limit. The 29-year-old Russian trains out of American Top Team and enters the bout ranked second in the lightweight division, making him one of the most prominent contenders in the weight class. Standing five-foot-seven with a 72-inch reach, Tsarukyan carries a professional record of 23 wins and 3 losses. He is a well-rounded threat, landing 3.85 significant strikes per minute at 50 percent accuracy while also averaging 3.26 takedowns per 15 minutes — a combination that creates problems across multiple phases of a fight.
Ruffin came in at 70.31 kilograms, also well within the limit. Specific verified statistics for Ruffin were not available, but his successful weigh-in confirms he is prepared and eligible to compete.
Why it matters
- Tsarukyan's ranking at number two in the lightweight division means a strong performance could push him firmly into title contention.
- With both fighters making weight cleanly, there are no procedural obstacles and the bout proceeds as planned.
- The lightweight division remains one of the UFC's most competitive, and a co-main event slot gives this matchup significant visibility heading into fight night.
Saturday, September 19, 2026
