The Nationals made their second trade of the day this afternoon, shipping out a pitcher most expected them to deal before the trade deadline. They sent right-hander Jason Marquis to the Diamondbacks, hours before he was scheduled to start at Nationals Park against the Mets.
The team had prepared for the trade, bringing Yunesky Maya up from Syracuse in case Marquis was dealt.
In return for Marquis, the Nationals got 21 year-old minor league shortstop Zachary Walters. The Nats have assigned the switch-hitting Walters to Potomac of the Single-A Carolina League.
Walters, 6-foot-3, 195-lbs., is a career .302 (192-for-636) hitter with 45 doubles, 10 triples, 13 home runs and 26 stolen bases in 166 games. He ranks among Midwest League leaders in runs (tied second, 69), hits (third, 109), total bases (third, 175) and extra-base hits (fourth, 42) this season.