Sports Matters 04/20/15

Everything you need to know about this year’s Boston Marathon

NBC Sports’ Rob Simmelkjaer takes a look at the demographics, business, and culture behind this year’s Boston Marathon with ‘The Mayor of Running,’ Bart Yasso. Also on the agenda: Adrian Peterson’s reinstatement and a preview of the NHL and NBA playoffs. Sports Matters airs Mondays at 11am ET on Shift. ... more Duration: {{video.duration.momentjs}}