Career DBPM for guards in the Olshey/Cronin era:
Thybulle +3.3
Josh Hart +0.7
Justice Winslow +0.7
Connaughton +0.4 (was negative in Portland)
Matthews +0.2
Evan Turner +0.2
Wade Baldwin +0.1
Brogdon -0.4
Will Barton -0.4
Rodney Hood -0.4
Norm Powell -0.4
Crabbe -0.4
Steve Blake -0.5
Seth Curry -0.5
Gary trent Jr. -0.6
Gerald Henderson -0.6
Dame -0.9
CJ -0.9
Afflalo -1.0
Mo Williams -1.1
Nik Stauskas -1.1
Ben McLemore -1.1
Sharpe -1.6
Simons -2.3
for the most part, those marks match the eyeball test
now, these are career numbers so they can be skewed from the Portland games depending on other teams. For instance, Pat Connaughton had negative marks all 3 seasons in Portland, but has positive marks in each of his 6 seasons in Milwaukee.
DBPM is fairly unforgiving of perimeter players, especially starting guards. Jrue Holiday's career mark is +0.1. But Tony Allen's career number is +1.9.
even though Brogdon has a negative career mark, he seems pretty close to a plus defender. This season, opposing offenses are 2.9 points/100-possessions worse when Brogdon is on the floor vs off the floor (but opposing offenses are 8.8 points better when Ant is on the floor). In fact, adding both the on/off for Brogdon of Portland's offense/defense, the Blazers are +9.8 points with Brogdon on the floor, which explains the gap in winning when Brogdon plays and doesn't. And Portland is -6.8 points when Ant is on the floor