 Harry Potter Day returns to Nationals Park Saturday, August 3rd, 4.05, as the Nats take on the Brewers, featuring the Mystery House jersey giveaway, where 10,000 fans receive one of four jerseys. Go to Nats.com slash Harry Potter for details and to buy tickets. Here's the pitch to Juan Yepes, up and outside of the Nats' first baseman, who has played seven games now with the Nationals and has hit safely in all of them.