Losing. It hurts. Especially when the games mean so much.
But it also makes for compelling images, shots of the coaches and players as they show on their faces what they're feeling inside: the agony of defeat.
There's a blog for that, one with which Playbook is working to find some the most eye-catching photos of pain in sports each week: the aptly named Tumblr "The Agony of Defeat."
Here are the selections from the past seven days -- featuring a number of big stories from around sports, including a pair of undefeateds falling, an NFL tie and an NBA coaching change.
To see more photos like this, visit The Agony of Defeat on Tumblr.