Six days of Olympics, gone in a blur. No surprise, of course, given the way these athletes move.

Racing around the cross-country course in Zhangjiakou, floodlights keeping the track clear at dusk. Or blitzing down the luge track, a colorful rocket on white ice.

Even in curling, speed is everything. Controlling the stone’s pace takes focus — blocking out all else — and it shows on the steady face of U.S. curler Christopher Plys.