Belcher's statement from  the team press release:

"When I accepted the position two years ago, I understood and embraced the challenges of the role. Over the last two years I was fully committed to the responsibilities of the job and enjoyed it.

"However, as I began to look forward to 2012, I felt that I would not be able to balance the changing needs of my family and the demands of the job. As a result, I have decided that it would be best for me to step away from coaching at this time.

 

[UPDATE] Paul Hoynes believes that bullpen coach Scott Radinsky is the favorite to replace Belcher. Chris Antonetti and Manny Acta will address the media shortly for the end-of-season press conference, and this will obviously come up.