The purging of the Mariners coaching staff continued this week, with the team firing pitching coach Carl Willis and demoting bullpen coach Jaime Navarro to a minor-league position. First-base coach Mike Brumley informed the team earlier in the week that he had been hired as an assistant hitting coach by the Cubs, a move that club announced on Friday. Willis had interviewed unsuccessfully with the Philadelphia Phillies for their pitching coach vacancy late last week, then called Mariners general manager Jack Zduriencik on Thursday to see whether he’d made a decision on his future. “He told me he felt it would be too awkward for me to come back with everything that had happened,” Willis said. Willis was seen as very close to manager Eric Wedge, who announced at season’s end he had decided not to return to Seattle because of philosophical differences with how the team was being run. Mariners bench coach Robby Thompson, also seen as close to Wedge, was fired earlier in the month. Willis said he’s still looking at jobs with other teams and understands new Mariners manager Lloyd McClendon wanting to bring his own coaches in.