Kelly Pavlik vs. Sergio Martínez was a professional boxing match contested on April 17, 2010, for the WBC, WBO and The Ring middleweight championship.

[2] Following his 5th round stoppage win over Miguel Espino in December 2009, Pavlik was set to fight former Welterweight champion Paul Williams.

However, due to a major staph infection and an allergic reaction to some antibiotics that nearly killed him,[3] Pavlik was forced to drop out of the fight.

In the last four rounds, Martínez would back and started to open up Pavlik's cuts more, making his face extremely bloody.

The sanctioning organizations for boxing recognize that boxers may choose to move up or down in the weight categories, yet they also wish to make all championship belts available to challenge.