Table 2.

Performance of Players 1 Season Before and 1 Season After Injury ^a

	PFF Grade, Mean ± SD
Position	Preinjury	Postinjury	Difference	P
Defensive lineman (n = 9)	68.22 ± 4.78	68.18 ± 8.05	–0.04 ± 8.44	0.99
Linebacker (n = 13)	63.50 ± 3.94	61.41 ± 5.35	–2.08 ± 5.89	0.50
Defensive back (n = 6)	63.27 ± 7.54	64.78 ± 7.69	1.52 ± 6.97	0.69
Total defense (n = 28)	64.97 ± 2.89	64.31 ± 3.96	–0.66 ± 4.02	0.75
Offensive lineman (n = 4)	74.40 ± 7.98	72.33 ± 7.15	–2.08 ± 13.61	0.81
Total offense (n = 7)	65.63 ± 9.90	68.17 ± 7.30	2.54 ± 8.71	0.61
Total (n = 35)	65.10 ± 3.04	65.08 ± 3.52	–0.02 ± 3.68	0.99

^a PFF, Pro Football Focus.