When you begin the season with a 13-15 record, and your team has a 4.86 ERA, the second worst in the major league, changes are a certainty, and the Red Sox today, May 7th fired pitching coach Juan Nieves.

Nieves, who had been the pitching coach since November 7, 2012, helped guide the team to the 2013 World Series Championship. That team had a ERA of 3.79. the lowest for the Red Sox since 2002.

In another move today, the Red Sox designated for assignment Edward Mujica, a right handed relief pitcher. He had a  4.61 ERA in 13 2/3 innings this season

The Red Sox are expected to recall Matt Barnes from Triple A Pawtucket to take Mujica's spot on the roster. There's no news who will be the interim or permanent pitching coach to take Nieves' spot, but remember John Farrell was a successful pitching coach for the Red Sox before becoming a manager with Toronto.

The Red Sox are off tonight, before starting a 3 game series in Toronto. You can hear those and every game on WDEA AM 1370