Not sure. When the ground ball puts a fielder and the baserunner hitting the same spot at the same time, whose responsibility is it to avoid a collision? The runner is entitled to the basepaths. Weeks was RIGHT ON the basepath when he fielded that ball. It's his fault and he's lucky he didn't get called for interference. I brought that up the other day during a game and apparently if you're making a play on the ball you cannot be called for interference.