Key takeaways
Merab Dvalishvili beat Sean O'Malley by unanimous decision after five rounds in the main event of UFC 306 at the Sphere in Las Vegas. Sean O'Malley had come in as the division's No. 2. The co-main event also went to the scorecards: Valentina Shevchenko beat Alexa Grasso, the division's No. 3, after five rounds at women's flyweight.
Across the ten bouts that produced a result, one ended by knockout, one by submission and eight on the judges' scorecards — two stoppages in ten fights. One of the eight decisions divided the judges.
The quickest finish belonged to Ketlen Souza, who stopped Yazmin Jauregui at 3:02 of round one, and two of the two finishes came inside the opening round. The longest was Ignacio Bahamondes's knockout of Manuel Torres, 4 minutes and 2 seconds in. End to end, the ten fights filled two hours and 27 minutes of cage time.
The preliminary card out-finished the main card: two of its five results came early, against no of the five above it. Ignacio Bahamondes (knockout, round one) and Ketlen Souza (submission, round one) all closed before the judges were needed.
Twelve ranked fighters appeared, and four of them were in the top two bouts, among them champions Valentina Shevchenko and Joshua Van.
Seven weight classes were used, bantamweight most often with two bouts.