Photo of Gilbert Arenas by Kyle Gustafson True to his word, yesterday Washington Wizards guard Gilbert Arenas opted out of the final year of his contract, leaving $12.8 million on the table in the hopes of signing a longer and more lucrative deal. Whether that will be with the Wizards remains to be seen. Arenas played only 13 games this year, his season cut short by a nagging knee injury, leaving open the question......