The 49ers announced on Sunday that Mike Singletary has been hired as their new coach, removing the interim tag he has had since Oct. 21 with a four-year deal. "Mike Singletary's leadership ability has galvanized the players and coaching staff to deliver improved results on the field," general manager Scot McCloughan said. "By turning the second half of the season around, he has accomplished what few interim head coaches have been able to do. "After discussions with ownership, we agree that Mike has earned the head coach position. I look forward to working with Mike to continue to build on the momentum he has created as we prepare for the 2009 season."