5 times UFC stars fought the fight of their lives despite being sick or injured 

#2. Robert Whittaker vs. Yoel Romero - UFC 213

At UFC 213, Robert Whittaker fought a surging Yoel Romero in the main event at the T-Mobile Arena. When the dust finally settled after Whittaker's unanimous decision win over 'Soldier of God', the Australian revealed that he had gone into the fight with an injury.

'The Reaper' admitted that he had tweaked his knee while preparing to take on the Cuban powerhouse. However, he refused to bail out of the fight. 'Bobby Knuckles' further picked up a strain to his left knee in the opening round.

The 2017 fight marked Whittaker's eighth win on the trot.

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#1. Georges St-Pierre vs Nick Diaz - UFC 158

Georges St-Pierre has frequently been hailed as one of the greatest fighters to have ever entered the octagon. In his fight against Nick Diaz at UFC 158 in March 2013, GSP proved why he deserved all the plaudits that came his way.

The fight took place at the Bell Center in St-Pierre's backyard of Montreal, Quebec, Canada. A unanimous decision victory on the night marked his 11th consecutive win.

In the wake of his win against Diaz, GSP's trainer revealed that he had suffered an injury to his Achilles tendon in his right leg in the lead up to the fight. What's more, he had endured an ACL tear to the same leg only a year prior.