ten feet is a bit too soon to slide without looking ridiculous, go around him while he's on the line and be called out of base path, as a catcher step back to allow the runner through, as a runner go back to third and cause a pickle? Any other suggestions? What could the baserunner or catcher have done? All of this if there was time to plan ahead. But runner, catcher, and ball arrive at point at once. What's a player to do and what does the umpire call upon collision?