least total yard differential by a team in a season

The Northwestern Wildcats gained 2,646 all-purpose yards in 1981.

	TEAM	YDS	DIFF	SEASON	GP	YDS/G	TD	PASS YDS	PASS YDS/G	SCKY	PASS TD	RUSH YDS	RUSH YDS/G	RUSH TD	RET YDS	RET YDS/G	RET TD
1	Northwestern	2,646	-423	1981	11	240.5		2,153	195.7		10	493	44.8	2	1,201	109.2
2	Temple	2,591	-412	1993	11	235.5		1,231	111.9		6	1,360	123.6	7	1,524	138.5
3	Washington State	3,134	-405	2008	13	241.1	20	1,898	146.0		3	1,236	95.1	10
4	UTEP	2,661	-402	1973	11	241.9		1,425	129.5		7	1,236	112.4	9
5	UMass	3,517	-395	2019	12	293.1	31	2,022	168.5	171	15	1,495	124.6	14	1,560	130.0	2
6	Temple	2,722	-391	2005	11	247.5	13	1,820	165.5		4	902	82.0	9	995	90.5	0
7	Louisiana	3,176	-377	1997	11	288.7		1,798	163.5		9	1,378	125.3	14	1,117	101.5
8	Kansas	3,978	-370	2015	12	331.5	24	2,623	218.6	276	12	1,355	112.9	10	1,120	93.3	2
9	Temple	2,588	-365	2006	12	215.7	18	1,944	162.0		13	644	53.7	4
10	SMU	3,228	-363	2014	12	269.0	15	2,024	168.7	229	6	1,204	100.3	9	1,150	95.8	0
11	Kent State	2,799	-362	2024	12	233.3	22	1,876	156.3	249	18	923	76.9	3	658	54.8	1
12	New Mexico	3,554	-356	2011	12	296.2	18	2,196	183.0		3	1,358	113.2	9
13	Colorado	3,375	-349	2022	12	281.3	22	2,075	172.9	175	10	1,300	108.3	11	927	77.3	1
14	New Mexico	3,346	-348	1988	12	278.8		2,336	194.7		11	1,010	84.2	9	1,296	108.0
15	Northwestern	2,397	-348	1978	11	217.9		1,650	150.0		8	747	67.9	4	933	84.8
16	Idaho	1,603	-343	2013	12	133.6	8	1,113	92.8	92	6	490	40.8	2	381	31.8	0
17	New Mexico	3,188	-342	2010	12	265.7	24	1,892	157.7		11	1,296	108.0	10
18	UConn	4,541	-339	2018	12	378.4	36	2,147	178.9	153	20	2,394	199.5	16	885	73.8	0
19	Colorado	3,633	-338	2012	12	302.8	28	2,310	192.5		10	1,323	110.3	13
20	Colorado State	3,146	-338	1981	12	262.2		2,465	205.4		21	681	56.8	2	820	68.3
21	Minnesota	3,321	-337	1983	11	301.9		2,208	200.7		14	1,113	101.2	6	1,313	119.4
22	San José State	4,135	-336	2017	13	318.1	24	2,574	198.0	317	15	1,561	120.1	6	983	75.6	3
23	Hardin-Simmons	1,939	-334	1961	10	193.9		1,063	106.3		2	876	87.6	4
24	Utah State	3,053	-332	2006	12	254.4	18	1,676	139.7		9	1,377	114.8	6
25	North Texas	4,356	-331	2008	12	363.0	30	2,828	235.7		15	1,528	127.3	14