Marlins to ask Dan Jennings to step down as manager, resume GM duties

The Miami Marlins, with progress in short supply, will ask Dan Jennings to return to his previous role as general manager and seek a new field manager at the end of this season, FoxSports.com has reported, citing unnamed sources.

The move was offered as a possibility when the Marlins installed him as manager in mid-May, as Jennings became the first major league skipper with no experience as a manager or big league player since Braves owner Ted Turner managed his team for one game in 1977.

The Miami Herald, meanwhile, reported the Marlins would undergo sweeping changes to its baseball operations staff with various scenarios still under consideration, including Jenning's return to the front office -- although not necessarily as GM.

Jennings, with more than 31 years of experience in professional baseball, replaced Mike Redmond after Miami started the season 16-22.

But the Marlins, at 54-79 and 19½ games back in the National League East after a 7-1 win over the Atlanta Braves on Tuesday night, have maintained a similar pace throughout the season.

Jennings was the Marlins' sixth new manager since June 2010. No other candidates had been considered when Jennings took the helm.

Jennings, under contract through 2018, had said he hesitated before agreeing to change jobs after spending the bulk of his career as a talent evaluator.

Jennings joined the Marlins in 2002 and ascended from vice president of player personnel to the general manager position after the 2013 season.

Information from ESPN.com's Jerry Crasnick and The Associated Press was used in this report.