I would recommend heading to the lower level just before the 9th inning. You can watch the ending from the concourse. Once the game ends, you can sneak your way towards the dugouts. A lot of people did that. Normally the ushers are cool about it. Today they had kids scheduled to run bases after the game, and they were trying to prevent people from moving towards the field. But it wasn't that hard to find your way to the front if you were really determined. I managed to get to the second row.