The Washington Nationals have traded journeyman pitcher Jason Marquis to the Arizona Diamondbacks in exchange for Zach Walters. The 21 year old third baseman is in the middle of a very solid season for Low-A South Bend. Walters is hitting .302 with 27 Doubles, 6 Triples, 9 Home Runs, 56RBI’s and has 12 stolen bases on the year. The biggest knock on 6’2″ switch hitter may be his plate discipline as he’s struck out 96 times in 361 at-bats. Walters made his pro debut last season at Yakima of the Northwest League where he hit .302 in 69 games. He was a ninth round pick of the Diamondbacks in the 2010 draft out of the University of San Diego.