Those who know me well will be surprised to find my writing anything about sports. And I admit it: I'm totally lacking in knowledge of any major sport. I've never watched a basketball game in my life. I get caught up in baseball only occasionally. Watching golf on TV is a good nap spoiled. I grew up in football country, but I rarely watch a game on TV except during my brother-in-law's annual visit.
It was during one of those visits, when he asked if he could watch a football game, that I discovered the yellow line, that stripe that magically appears underneath the players to mark the down line. "Is that really on the field?" I asked. "Nah," he said, "they do it with the camera." He didn't know how.
But now, the magic of Internet video explains it all for us here.
Really, is there anything you can't learn from the Internet?