Yesterday evening at midnight was the end of season deadline for the Nationals to agree to contracts with their arbitration-eligible players, and the Nats let Chien-Ming Wang, Wil Nieves (Who?) and Joel Peralta go without a contract. The Nats did agree to contracts to Jesus Flores and Alberto Gonzalez for the 2011 season. The other five players that will participate in binding arbitration are John Lannan, Josh Willingham, Sean Burnett, Michael Morse and Doug Slaten. Of these deals, the biggest departure is Peralta, who had an excellent second half of 2010 after his promotion from Syracuse.