The Pirates filled their coaching staff Wednesday by hiring bullpen coach Euclides Rojas, first-base coach Luis Silverio, coach Mark Strittmatter and bullpen catcher Heberto Andrade, the team said in a statement.

The final staff also includes bench coach Jeff Banister, pitching coach Ray Searage, third-base coach Nick Leyva and hitting coach Gregg Ritchie, whom the Post-Gazette reported Sunday the team had hired.

"We are pleased to have assembled the coaching staff, as I am confident in the skill sets these men bring to our team as well as the quality of individuals professionally and personally," manager Clint Hurdle said in a statement.

Five of the eight coaches worked for the Pirates in some capacity in 2009 and one, Strittmatter, worked with Hurdle when he managed the Colorado Rockies.

The Pirates promoted Rojas, formerly their Latin American field coordinator. He was a coach in the Florida Marlins' minor league system for five years before joining the Pirates as their Latin American field coordinator in 2002. He spent two seasons ('03-04) as the Boston Red Sox' bullpen coach and he returned to the Pirates in '05.

Silverio also will be the outfield and base-running coach. He spent 35 seasons working for the Kansas City Royals organization and from '03-08 worked as first- and third-base coach for the major league team. Strittmatter was the bullpen coach for the Colorado Rockies for the past eight seasons. He'll serve as the pitchers' hitting coach and work with the catchers.

"Their character, integrity and respect for the tradition of the Pirates combined with their intensity and passion for teaching will have an immediate impact on our ballclub," Hurdle said in the statement. "They will also challenge and sharpen me to become the best manager I can be for our organization and team."

Andrade was the Pirates' bullpen catcher for the past eight seasons.

The Pirates traded starting pitcher Zach Duke to the Arizona Diamondbacks for a player to be named later, the team announced Wednesday.

Duke was 8-15 with a 5.72 ERA in 2010. The Pirates designated him for assignment Friday, so the move does not affect the 40-man roster.

Duke was eligible for arbitration, but the Pirates did not tender him. Duke made $4.3 million during the 2010 season.

Duke was 45-70 in six seasons with the Pirates. He threw more than 200 innings twice, in 2006 and again in '09, when he went 11-16 with a 4.06 ERA and represented the Pirates in the All-Star Game.

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