MILWAUKEE (AP) -- The Milwaukee Brewers have fired bullpen coach Stan Kyles following another meltdown by its relievers.

Brewers general manager Doug Melvin said Monday that the change was necessary to improve a bullpen that has recorded the most losses and blown saves in the major leagues.

Kyles had been the bullpen coach since 2009. He will be replaced in the interim by Lee Tunnel, who is in his fourth season with the Brewers as minor league pitching coordinator.

Brewers' relievers have gone 15-26 with a 4.80 ERA this season. The Washington Nationals took advantage of the Brewers' beleaguered bullpen Sunday in an 11-10 win in 11 innings.