Here is scenario in which LG wins 6 additional games (74 total) but does not reach the postseason.

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
             KIA	81	61	2	0.5704	0.0
         Samsung	79	63	2	0.5563	2.0
          Doosan	75	67	2	0.5282	6.0
              KT	75	67	2	0.5282	6.0
           Lotte	73	67	4	0.5214	7.0
              LG	74	68	2	0.5211	7.0
             SSG	69	73	2	0.4859	12.0
          Hanwha	67	75	2	0.4718	14.0
              NC	59	83	2	0.4155	22.0
          Kiwoom	58	86	0	0.4028	24.0

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
             KIA	81	50	2	11	0.618	0.0
         Samsung	75	57	2	10	0.568	6.5
              LG	68	62	2	12	0.523	12.5
              KT	67	65	2	10	0.508	14.5
          Doosan	65	66	2	11	0.496	16.0
             SSG	62	68	2	12	0.477	18.5
           Lotte	59	67	4	14	0.468	19.5
          Hanwha	60	69	2	13	0.465	20.0
              NC	58	71	2	13	0.450	22.0
          Kiwoom	56	76	0	12	0.424	25.5

The next two tables show, respectively, how many of their remaining games each team wins and ties against each of the other teams in the scenario:

					Scenario Additional Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	0	1	1	1	3	0	2	1	1	10
Hanwha	0	-	1	1	0	0	0	4	0	1	7
KIA	0	0	-	0	0	0	0	0	0	0	0
Kiwoom	0	0	2	-	0	0	0	0	0	0	2
KT	0	0	1	3	-	0	0	0	2	2	8
LG	0	1	0	1	0	-	0	2	1	1	6
Lotte	1	5	2	0	1	3	-	2	0	0	14
NC	0	0	1	0	0	0	0	-	0	0	1
Samsung	0	0	2	2	0	0	0	0	-	0	4
SSG	0	0	1	2	0	0	0	2	2	-	7
-----------------------------------------------------------------------------------
Losses	1	6	11	10	2	6	0	12	6	5

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	1	0	0	0	1	0	0	0	0
Hanwha	0	-	0	0	0	0	0	2	0	0	0
KIA	0	0	-	0	0	0	1	0	0	0	0
Kiwoom	0	0	0	-	0	0	0	0	0	0	0
KT	0	0	0	0	-	0	1	0	1	0	0
LG	0	0	0	0	0	-	0	0	1	1	0
Lotte	0	0	0	0	0	0	-	0	0	0	0
NC	0	0	0	0	0	0	0	-	0	0	0
Samsung	0	0	0	0	0	0	0	0	-	0	0
SSG	0	0	0	0	0	0	0	0	0	-	0
-----------------------------------------------------------------------------------
Total	0	0	0	0	0	0	0	0	0	0

The next two tables show, respectively, how many total games each team wins and ties against each of the other teams in the scenario:

					Scenario Total Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	6	9	10	12	9	6	12	4	7	75
Hanwha	10	-	5	7	10	7	5	6	6	11	67
KIA	6	11	-	10	8	13	6	11	10	6	81
Kiwoom	6	9	6	-	2	10	8	7	6	4	58
KT	4	6	8	14	-	7	7	10	9	10	75
LG	7	9	3	6	9	-	9	13	7	11	74
Lotte	9	11	9	8	8	7	-	9	6	6	73
NC	4	8	5	9	6	3	7	-	6	11	59
Samsung	12	10	6	10	6	8	10	10	-	7	79
SSG	9	5	10	12	6	4	9	5	9	-	69
-----------------------------------------------------------------------------------
Losses	67	75	61	86	67	68	67	83	63	73

					Scenario Total Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	1	0	0	0	1	0	0	0	2
Hanwha	0	-	0	0	0	0	0	2	0	0	2
KIA	0	0	-	0	0	0	1	0	0	0	2
Kiwoom	0	0	0	-	0	0	0	0	0	0	0
KT	0	0	0	0	-	0	1	0	1	0	2
LG	0	0	0	0	0	-	0	0	1	1	2
Lotte	0	0	0	0	0	0	-	0	0	1	4
NC	0	0	0	0	0	0	0	-	0	0	2
Samsung	0	0	0	0	0	0	0	0	-	0	2
SSG	0	0	0	0	0	0	0	0	0	-	2
-----------------------------------------------------------------------------------
Total	2	2	2	0	2	2	4	2	2	2