| UFC Fight Night: Błachowicz vs. Santos | |
| Promotion: | Ultimate Fighting Championship |
| Venue: | O2 Arena |
| City: | Prague, Czech Republic |
| Attendance: | 16,583[1] |
| Gate: | $1,606,176 |
| Followingevent: | UFC 235: Jones vs. Smith |
UFC Fight Night: Błachowicz vs. Santos (also known as UFC Fight Night 145 or UFC on ESPN+ 3) was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on February 23, 2019 at O2 Arena in Prague, Czech Republic.[2]
The event marked the promotion's first visit to the Czech Republic.
A light heavyweight bout between former KSW Light Heavyweight Champion Jan Błachowicz and Thiago Santos served as the event headliner.[3] [4]
Darko Stošić was scheduled to face Magomed Ankalaev at the event. However, Stošić pulled out of the fight on January 23 citing injury.[5] He was replaced by promotional newcomer Klidson Abreu.[6]
Sam Alvey was expected to face Gadzhimurad Antigulov at the event. However on January 25, it was reported that Alvey was chosen as a replacement for another bout at UFC 234 and the bout was scrapped.[7]
Ramazan Emeev was expected to face Michel Prazeres at this event. However on February 4, it was reported that Emeev pulled out of the bout citing injury.[8] He was replaced by promotional newcomer Ismail Naurdiev.[9]
At the weigh-ins, Carlos Diego Ferreira and Klidson Abreu missed the required weight for their respective fights. Ferreira weighed in at 157 pounds, 1 pound over the lightweight non-title fight limit of 156. Meanwhile, Abreu weighed in at 209 pounds, 3 pounds over the light heavyweight non-title fight limit of 206. Both bouts were held at catchweight. Ferreira and Abreu were fined 20% of their purses, which went to their opponents Rustam Khabilov and Magomed Ankalaev.[10]
The following fighters were awarded $50,000 bonuses:[12]