Apr 18, 2009 10:36 AM EST

The Nationals and third baseman Ryan Zimmerman appear close to a five-year, $45 million extension, according to a source close to the situation.

Washington has made it known that they want to keep their 2005 first-round pick.

The deal would begin this year, nullifying the one-year, $3.325 million contract Zimmerman signed with the Nationals in February, and will continue through the 2013.

Via Washington Post