Pirates acquire three players in trades

The Pittsburgh Pirates made several moves on Wednesday that included trades with the Royals and Red Sox.

The Pirates acquired first baseman Clint Robinson and right-hander Vin Mazzaro from Kansas City in exchange for pitching prospects Luis Rico and Luis Santos.

Pittsburgh also obtained right-hander Zach Stewart from Boston for a player to be named later.

Mazzaro, 26, was 4-3 with a 5.73 ERA for the Royals in 2012, and Robinson had just four at-bats without a hit for the Roayls this past season.

Stewart was 1-4 with an 8.58 ERA for the Red Sox and White Sox in 2012.

The Pirates designated for assignment infielders Matt Hague and Yamaico Navarro.