I confess that my Irish heart got quite sentimental and soggy when I saw Kieran Behan step on to the floor on Saturday in his leprechaun-green athletic gear. (That part was unfortunate.) Not only is he Irish—Kieran!—but he has overcome enormous adversity to be at the Olympics. And like a true Irishman, he has demonstrated Olympian stubbornness. When he was 10, he found a tumor the size of a golf ball on his leg; the doctors botched the surgery and left him with “permanent” nerve damage. But he learned to walk again — and began training, only to suffer a freak accident: brain damage after hitting his head in a routine fall. Hours and hours of rehab. It only went on from there: first the torn ACL in one knee, then the other; a broken arm; financial straits (he ended up sweeping the gym he trained in); and now a rotator cuff injury. Yet there he was, walking out on the floor mat along with all the other Olympians.