According to PFF's rankings, the top 3 players on the defense are as follow:
1. Glenn Dorsey-Overall 8.2 score
2. NaVorro Bowman-Overall 5.4 score
3. Aldon Smith-Overall 5.2 score
The three worst ranked on defense are as follow:
1. Nmandi Asomugha-Overall -3.9 score
2. Carlos Rogers-Overall -2.5 score
3. Craig Dahl-Overall -1.4 score
The top three ranked players on offense are as follows:
1. Frank Gore-Overall 3.9 score
2. Bruce Miller-Overall 2.4 score
3. Vernon Davis-Overall 2.2 score
The lowest ranked three players on offense are as follows:
1. Colin Kaepernick-Overall -9.4 score
2. Vance McDonald-Overall -4.3 score
3. Kyle Williams-Overall -3.7 score
According to PFF, Goodwin and Iupati are both struggling and in the negative while Alex Boone has performed the best out of the 49ers OL thus far this season. Iupati especially has done terribly in pass-blocking while Goodwin has been lousy in run-blocking. Gore has done very well in pass-blocking and Miller has done a good job in run blocking.
On defense, Asomugha has been bad in basically everything..pass coverage...run stopping, just bad all over the place. Brooks and Dorsey have been outstanding against the run while Justin Smith and Ray McDonald have been iffy. Bowman, Aldon and Justin have been the most effective when it comes to rushing the passer.
Brock, Reid and Whitner have all been solid in pass coverage while Brown and Rogers have struggled.
Wilhoite has done poorly overall.
Dorsey is playing better than Williams was, at least based on PFF's rankings.
Dahl has been bad all over the place on defense