This is Pete Frates, the former Boston College baseball player who was diagnosed with ALS (also known as Lou Gehrig's disease) in March 2012. He's the inspiration for the Ice Bucket Challenge.
But it wasn't until last week that he actually took the challenge himself — at Fenway Park, surrounded by family and friends.
ESPN's Tom Rinaldi has the full story of Frates and his incredible fight against ALS:
(If you're on a mobile device, you can watch it here.)
This post mistakenly referred to the Boston Red Sox's home stadium as Fenway Field, even though it is Fenway Park (and anyone who's ever watched a baseball game would know that). Our apologies.