IMO not as important as a solid bullpen in mlb, but still a factor to take into account. A bad bench gives momentum to the opponent that sometimes can be hard to claw back. Lakers 2nds blew a 15 point lead in 4 minutes against the clippers and then had to get the big boys back on to get things back on track.
thanks for the replies I will start looking more at stats on nba bench players. This seems easy to do however I was wondering how do you measure perfomance of bench players o-line and d-line in football?
Especially when betting a dog you want a good bench, you need some one who can pull up and hit that cheap 3 at the end to get the backdoor cover, and like some mentioned above some teams go to shit when a star player has to sit down.