The 5 biggest UFC fights that were canceled in 2021

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#4. Darren Till vs. Marvin Vettori - UFC on ABC 2

Till withdrew from the bout with a broken collarbone

Darren Till was scheduled to face Marvin Vettori on April 10th on the UFC on ABC 2 card. The bout would've been an important one in the middleweight division. It would have likely determined the next challenger to take on Israel Adesanya for UFC gold.

However, on March 30th, Till was forced to withdraw from the bout due to a broken collarbone. Kevin Holland stepped in as his replacement and Vettori secured a unanimous decision victory, earning himself a title shot in the process.

Since then, Vettori lost his title fight with Adesanya but rebounded with a win over Paulo Costa. Till went on to lose to Derek Brunson and still appears to be struggling with injuries. Should the British fighter pick up one victory, we could conceivably see Till vs. Vettori in 2022.

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#3. Paulo Costa vs. Robert Whittaker - UFC on ESPN 22

Costa withdrew from the bout due to illness

Former UFC middleweight champion Robert Whittaker was scheduled to face former title challenger Paulo Costa on April 17th. On March 16th, Costa withdrew with an illness and Kelvin Gastelum stepped in to replace him.

While fans missed out on a huge fight in the middleweight division, Whittaker was able to defeat Gastelum via unanimous decision and set up a rematch for the title against Israel Adesanya next year. Costa eventually recovered and fought Marvin Vettori in October, but suffered a second consecutive loss in the process.

Costa missed weight for the bout against Vettori and may now be forced into a move up to the light heavyweight division. Whittaker, on the other hand, will have a shot at regaining his middleweight title in February.