I had this weird play and after thinking about it for the next 4 innings, I may have got it wrong.
R1, no outs. Ball hit to the 2nd baseman. When he fields the ball, he's about a step in front of the basepath of R1. R1 pulls up/stops before he gets to the fielder. I don't know why, I guess he thought he was going to run into him or be tagged if he caught it. The 2nd baseman boots the ball and it deflects behind him about 6-7 feet. The runner tries to go behind the 2nd baseman who is now trying to retrieve the ball. He's within about two steps from the ball when he blocks the path of R1. No contact was made, but R1's progress was slowed down. He retrieves the ball and throws to 2nd for the force out. I call him out. This all happened very fast. My reasoning at the time was that since R1 stopped on his own before the fielder booted the ball, and there was really no reason for him to stop (he could have gone waaay around the fielder to avoid him making a play), I had nothing on the play and called him out on the force. I talked to my partner and he said he saw the same thing and didn't see anything that would warrant a reversal and call obstruction.
As umpires will do on weird plays, I thought about it for the rest of the game. I think I could have/should have called obstruction because the fielder did hinder/impede the runner without the ball. But the runner had already pulled up/stopped before the fielder booted the ball....but he booted it and then hindered R1, he shouldn't get to hinder and get the out. Obviously, the coach wasn't happy but it didn't affect the outcome.
If I described this properly, what do you think? Did I miss this one?