Tristan Sainz beats David Weintraub by SUB in round 1 on 29 October 2026

Tristan Sainz submitted David Weintraub in the opening round at UFC BJJ 13: Tackett vs Rodriguez, securing victory with a submission finish. The lightweight bout ended late in the first frame, giving Sainz a winning start to his professional record. Both fighters entered the cage making their debuts, and Sainz seized control to claim the finish before the bell.

How it ended

Sainz locked in the submission late in the first round, forcing the tap with seven seconds remaining in the frame. The finish came after nearly five minutes of action, demonstrating Sainz's patience in finding the opening. Weintraub had no answer once the hold was secured, ending his debut with a stoppage loss.

Updated records

• Tristan Sainz — 1-0
• David Weintraub — 0-1

What's next

Sainz moves to one win and no losses following the submission victory, establishing himself on the UFC BJJ circuit with an impressive first outing. Weintraub drops to no wins and one loss after the setback, facing the task of regrouping from a debut defeat. Both lightweights will look to build experience in the grappling-focused format as they develop their professional careers.

Frequently asked questions

Who won Tristan Sainz vs David Weintraub?

Tristan Sainz defeated David Weintraub by SUB in round 1 at UFC BJJ 13: Tackett vs Rodriguez.

How did Tristan Sainz vs David Weintraub end?

The fight ended by SUB in round 1 at 4:53.

What's Tristan Sainz's record now?

Tristan Sainz now stands at 1-0.

View the full UFC BJJ 13: Tackett vs Rodriguez card →