I'll go with Singletary, although Erickson is very close.
was a motivator, that's it. Not a coach in any capacity. The team fed off his energy initially and pulled out a few wins based solely on change and player talent. Once they needed him to actually coach, he couldn't in any fashion.
, much like Singletary, got by on player talent alone in the beginning. That 2003 team still had Garcia and Owens, and that combo was only enough to get the 49ers to 7 wins. The following year might as well have been a winless season, with two wins coming against the lowly Cardinals, both by FG's, in overtime. Truly dismal. In his defense though, the team gutted the roster down to one that was equivalent or worse than a expansion team. So he really didn't have a snowball's chance in hell.
certainly had his issues, but he seemed much more competent than the other two. His shortcoming centered around lack of offensive knowledge and more so, the inability to keep competent offensive coordinators on board (McCarthy, Turner). He knew he needed an offensive guru, which was smart of him. The issue was that they couldn't hold onto anyone. As for defense, he wasn't great at that either. The Niners failed miserably at making the big stop when they needed it most and routinely failed to shut down offenses on 3rd downs. So lack of offensive intellect, the big nickel (ugh), inability to make in-game/game-to-game adjustments, and undermining his QB ultimately did him in.
Ahhh Harbaugh, our savior, so glad to have you here. We've paid our dues!
[ Edited by NinerPrideinNJ on Jun 12, 2012 at 9:12 AM ]