He 's had a nice , solid , long - lasting MLB career as mostly a middle reliever .
> 6 bWAR : Mackey mentioned Brian Duensing as a guy who sits on the borderline of impact type of player .
Brian Duensing 's had a nice , solid , long - lasting MLB career as mostly a middle reliever .
> 6 bWAR : Mackey mentioned Brian Duensing as a guy who sits on the borderline of impact type of player .