The Royals must like the performance of their minor-league clubs after announcing plans Friday to keep the same managers in place at all seven of its domestic affiliates.

Mike Jirschele will return to Class AAA Omaha for an 11th straight season. He guided the Storm Chasers to the 2011 Pacific Coast League title and into the 2012 championship series.

Brian Poldberg will lead Class AA Northwest Arkansas for a sixth straight season, while Vance Wilson is back for second year at High-A Wilmington.

Brian Buchanan remains manager of the club’s Low-A affiliate – Lexington in 2013, which replaces Kane County in the Royals’ affiliate roster.

The three short-season clubs also retained their managers: Oscar Ramirez at Idaho Falls, Tommy Shields at Burlington and Darryl Kennedy at Surprise.

The organization’s only managerial change is for its club in the Dominican Summer League, where Ramon Martinez replaces José Mejia. Martinez served last season at the club’s infield coach.

Complete minor-league and affiliate staffs:

Minor League: Tony Tijerina (field coordinator); Bill Fischer (senior pitching advisor); John Wathan (special assistant to player development/scouting); Steve Foster (special assistant to general manager/pitching coordinator); Terry Bradshaw (hitting coordinator); José Castro (assistant hitting coordinator); Glenn Hubbard (infield coordinator); Milt Thompson (bunting/baserunning coordinator); Sean McQueeney (rehab coordinator); Chris DeLucia (medical coordinator); Tony Medina (Latin America medical coordinator); Garrett Sherrill (strength and conditioning coordinator); Luis Perez (Latin America strength and conditioning coordinator); Nick Leto (manager of Arizona operations: and Will Simon (equipment coordinator).

Omaha: Mike Jirschele (manager), Larry Carter (pitching coach); Tommy Gregg (hitting coach); Dan Iannicca (trainer); and Joey Greany (strength and conditioning coach).

Northwest Arkansas: Brian Poldberg (manager); Jim Brower (pitching coach); Nelson Liriano (hitting coach); Masa Koyanagi (trainer) and David Kathmann (strength and conditioning coach).

Wilmington: Vance Wilson (manager); Steve Luebber (pitching coach); Julio Bruno (hitting coach); James Stone (trainer) and Adam Vish (strength and conditioning coordinator).

Lexington: Brian Buchanan (manager); Jerry Nyman (pitching coach); Justin Gemoll (hitting coach); Mark Keiser (trainer) and Nate Dine (strength and conditioning coach).

Idaho Falls: Oscar Ramirez (manager); Steve Merriman (pitching); Damon Hollins (hitting coach); trainer and strength and conditioning coach to be announced.

Burlington: Tommy Shields (manager); Carlos Martinez (pitching coach); Abraham Nunez (hitting coach); Saburo Hagihara (trainer); strength and conditioning coach to be announced.

Surprise: Darryl Kennedy (manager); Mark Davis (pitching coach); Carlos Reyes (pitching/rehab coordinator); Pedro Grifol (hitting coach); Willie Aikens (coach); Robbie Oates (trainer) and Jacob Campos (strength and conditioning coach).

Dominican: Ramon Martinez (manager); Rafael Roque (pitching coach); Miguel Bernard (coach); Miguel Garcia (coach); Onil Joseph (outfield coach); Martin Berroa (trainer) and José Rosario (strength and conditioning coach).

To reach Bob Dutton, Royals reporter for The Star, send email to bdutton@kcstar.com. Follow his updates at twitter.com/Royals_Report.