4:06pm: The D'Backs take on all of the $2.47MM remaining on Marquis' contract, according to Bowden (on Twitter).
3:58pm: The Nationals will receive shortstop prospect Zach Walters from the D'Backs, tweets ESPN's Jim Bowden.
3:42pm: The trade is agreed upon, tweets Morosi – Marquis will join the Diamondbacks.
3:33pm: The D'Backs are close to acquiring Marquis, tweets Jon Paul Morosi. Marquis is scheduled to take on the Mets less than three hours from now at Nationals Park.
3:27pm: The Diamondbacks are working to acquire righty Jason Marquis from the Nationals, tweets Ken Rosenthal of FOX Sports.
Marquis, 32, has a 3.95 ERA, 5.3 K/9, 2.9 BB/9, 0.6 HR/9, and 54.0% groundball rate in 120 2/3 innings this year. Our projected Elias rankings have him well short of Type B status, and he's owed $2.5MM on the season.