Here is scenario in which Lotte wins 41 additional games (87 total) but does not reach the postseason.

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
          Hanwha	87	53	4	0.6214	0.0
              LG	87	53	4	0.6214	0.0
             KIA	86	53	5	0.6187	0.5
              KT	86	53	5	0.6187	0.5
             SSG	86	53	5	0.6187	0.5
           Lotte	87	54	3	0.6170	0.5
              NC	58	81	5	0.4173	28.5
         Samsung	58	85	1	0.4056	30.5
          Doosan	40	101	3	0.2837	47.5
          Kiwoom	26	115	3	0.1844	61.5

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
          Hanwha	49	33	2	60	0.598	0.0
              LG	46	37	2	59	0.554	3.5
           Lotte	46	37	3	58	0.554	3.5
             KIA	45	37	3	59	0.549	4.0
             SSG	42	39	3	60	0.519	6.5
              KT	43	40	3	58	0.518	6.5
         Samsung	43	41	1	59	0.512	7.0
              NC	37	40	5	62	0.481	9.5
          Doosan	34	48	3	59	0.415	15.0
          Kiwoom	26	59	3	56	0.306	24.5

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	0	6	0	0	0	0	0	0	6
Hanwha	7	-	0	6	8	0	2	4	8	3	38
KIA	7	6	-	4	4	5	0	9	6	0	41
Kiwoom	0	0	0	-	0	0	0	0	0	0	0
KT	4	0	0	4	-	8	4	8	9	6	43
LG	8	6	3	7	0	-	8	5	4	0	41
Lotte	7	4	7	7	0	0	-	8	3	5	41
NC	7	0	0	7	0	0	0	-	7	0	21
Samsung	4	0	0	8	0	0	3	0	-	0	15
SSG	9	4	6	7	1	3	0	7	7	-	44
-----------------------------------------------------------------------------------
Losses	53	20	16	56	13	16	17	41	44	14

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

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	-	4	2	13	4	4	4	2	5	2	40
Hanwha	12	-	5	15	13	4	6	11	13	8	87
KIA	14	9	-	10	11	9	6	13	9	5	86
Kiwoom	3	1	4	-	3	3	2	2	3	5	26
KT	11	3	5	13	-	12	8	11	14	9	86
LG	12	11	7	13	3	-	12	11	10	8	87
Lotte	12	10	10	14	6	3	-	12	10	10	87
NC	12	4	3	13	5	5	4	-	10	2	58
Samsung	11	3	7	13	2	6	6	6	-	4	58
SSG	14	8	10	11	6	7	6	13	11	-	86
-----------------------------------------------------------------------------------
Losses	101	53	53	115	53	53	54	81	85	53

					Scenario Total Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	0	0	1	0	0	2	0	0	3
Hanwha	0	-	2	0	0	1	0	1	0	0	4
KIA	0	2	-	2	0	0	0	0	0	1	5
Kiwoom	0	0	0	-	0	0	0	1	0	0	3
KT	0	0	0	0	-	1	2	0	0	1	5
LG	0	0	0	0	1	-	1	0	0	1	4
Lotte	0	0	0	0	0	0	-	0	0	0	3
NC	0	0	0	0	0	0	0	-	0	1	5
Samsung	0	0	0	0	0	0	0	0	-	1	1
SSG	0	0	0	0	1	1	0	0	0	-	5
-----------------------------------------------------------------------------------
Total	3	4	5	3	5	4	3	5	1	5