Dave Sime left the starting blocks like a drunk on roller skates, wobbled along for 50 meters and then put on a burst to win the 100-meter race by a step in 10.4. The scene was the Coliseum Relays in Los Angeles, run on a lumpy, soft grass track. "I felt very sharp," Sime said later. "I'm sore about that start. I came straight up, and I've been working all week on starting. I had trouble with my balance. But the finish was good, wasn't it?" It was, and Sime, whose pulled leg muscles kept him out of the last Olympics, is back in business.