In 2017, Brent McMahon was stung by a jellyfish before the start of the Ironman World Championship. With very little time between the incident and the start of the race, McMahon tried his best to fight the pain and compete. However, the pain would be too much to handle and he withdrew from the race after the swim.

Related: How to watch the 2018 Ironman World Championship

This year, McMahon will be looking to redeem last year’s DNF and improve upon his career-best finish of ninth in 2015.

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