Tanner Boser vs Jhonata Diniz
The setup
Tanner Boser (5-6 in the UFC) faces Jhonata Diniz (3-2 in the UFC) in a three-round heavyweight bout at UFC Fight Night 291 on October 17, 2026. Boser is 2-3 over the last five and lost to Gokhan Saricam last time out. Diniz is 3-2 over the last five and lost to Mario Pinto last time out. It's Diniz's first fight in 12 months. Diniz has 2 inches of height and 4 inches of reach on Boser.
On the feet
Boser lands 4.82 significant strikes per minute at 54% accuracy and absorbs 3.00. Diniz lands 3.67 at 59% and absorbs 3.41. That gives Boser the better striking differential, +1.81 per minute to Diniz's +0.27. Boser has 3 knockout wins in 11 UFC fights. By our numbers Boser is a volume striker and Diniz a counter striker.
On the mat
Neither leans on wrestling (0.00 and 0.00 takedowns per 15 minutes), so this should mostly be fought standing.
How it ends
Boser's likeliest path is by knockout (20%), while Diniz's is by decision (28%). The model gives it a 52% chance of ending early. If it does, round 1 is the most likely (54% of finishes), and 85% come in the first two rounds.
The pick
The model takes Diniz at 57%, a slight lean. Picks in the 55-60% range have been right 61% of the time on 387 UFC fights since 2024. What's pushing it toward Diniz: recent form, absorbing fewer strikes and win rate. Boser's case rests on UFC experience and striking output.
Model picked Jhonata Diniz by Decision Model missed
Track record: 64% correct on 1,474 UFC fights since 2024 that the model never trained on, and 71% when it gives a fighter 60% or better.