According to Nick Piecoro of the Arizona Republic, the Diamondbacks have designated infielder Josh Wilson for assignment.
With regular shortstop Stephen Drew back to full health, Wilson was simply no longer needed. The 28-year-old hit .231/.333/.269 with two RBI and one run scored in 11 games for Arizona this season. He seems likely to end up back at the club's Triple-A affiliate in Reno, Nevada.