Here is scenario in which NC wins 93 additional games (100 total) but does not reach the postseason.

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
          Kiwoom	98	43	3	0.6950	0.0
           Lotte	98	43	3	0.6950	0.0
         Samsung	98	43	3	0.6950	0.0
          Hanwha	100	44	0	0.6944	-0.5	See explanation of tie-breakers below.
              LG	100	44	0	0.6944	-0.5	See explanation of tie-breakers below.
              NC	100	44	0	0.6944	-0.5	See explanation of tie-breakers below.
          Doosan	46	98	0	0.3194	53.5
             KIA	33	111	0	0.2292	66.5
             SSG	23	121	0	0.1597	76.5
              KT	19	124	1	0.1329	80.0

Explanation of Tie-breakers:
The following table shows how many games each of the teams tied for fifth place in the scenario have already won against each other:
Team	Hanwha	LG	NC	Total
Hanwha	-	0	1	1
LG	3	-	2	5
NC	0	0	-	0

The following table shows how many additional games each of the teams tied for fifth place win against each other in the scenario:
Team	Hanwha	LG	NC	Total
Hanwha	-	7	12	19
LG	6	-	3	9
NC	3	11	-	14

The following table shows how many games total each of the teams tied for fifth place win against each other in the scenario:
Team	Hanwha	LG	NC	Total
Hanwha	-	7	13	20
LG	9	-	5	14
NC	3	11	-	14

The first tiebreaker does not resolve the tie.
The following table shows how many runs each of the teams tied for fifth place as already scored against each other in the scenario:
Team	Hanwha	LG	NC	Total
Hanwha	-	1	12	13
LG	11	-	22	33
NC	4	8	-	12

The following table shows how many additional runs each of the teams tied for fifth place scores against each other in the scenario:
Team	Hanwha	LG	NC	Total
Hanwha	-	119	12	131
LG	108	-	3	111
NC	3	129	-	132

The following table shows how many runs total each of the teams tied for fifth place scores against each other in the scenario:
Team	Hanwha	LG	NC	Total
Hanwha	-	120	24	144
LG	119	-	25	144
NC	7	137	-	144


NC finished #9 in the standings last year.
LG finished #3 in the standings last year.

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
              LG	17	4	0	123	0.810	0.0
           Lotte	12	10	1	121	0.545	5.5
          Hanwha	12	11	0	121	0.522	6.0
              KT	10	10	1	123	0.500	6.5
         Samsung	11	11	0	122	0.500	6.5
             SSG	9	10	0	125	0.474	7.0
          Doosan	9	11	0	124	0.450	7.5
             KIA	9	12	0	123	0.429	8.0
              NC	7	10	0	127	0.412	8.0
          Kiwoom	8	15	0	121	0.348	10.0

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	15	0	8	0	0	0	0	14	37
Hanwha	13	-	13	11	14	7	4	12	1	13	88
KIA	0	0	-	0	10	0	0	0	0	14	24
Kiwoom	14	2	13	-	15	3	9	12	9	13	90
KT	5	0	3	0	-	1	0	0	0	0	9
LG	13	6	14	10	13	-	0	3	9	15	83
Lotte	13	10	13	3	13	14	-	0	7	13	86
NC	16	3	14	1	13	11	13	-	6	16	93
Samsung	13	12	14	3	14	4	7	7	-	13	87
SSG	0	0	0	0	14	0	0	0	0	-	14
-----------------------------------------------------------------------------------
Losses	87	33	99	28	114	40	33	34	32	111

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	0	0	0	0	0	0	0	0	0
Hanwha	0	-	0	0	0	0	0	0	0	0	0
KIA	0	0	-	0	0	0	0	0	0	0	0
Kiwoom	0	0	0	-	0	0	1	0	2	0	3
KT	0	0	0	0	-	0	1	0	0	0	0
LG	0	0	0	0	0	-	0	0	0	0	0
Lotte	0	0	0	1	0	0	-	0	1	0	2
NC	0	0	0	0	0	0	0	-	0	0	0
Samsung	0	0	0	2	0	0	1	0	-	0	3
SSG	0	0	0	0	0	0	0	0	0	-	0
-----------------------------------------------------------------------------------
Total	0	0	0	3	0	0	2	0	3	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	-	1	16	2	9	1	2	0	1	14	46
Hanwha	15	-	15	13	15	7	4	13	2	16	100
KIA	0	1	-	1	12	0	2	1	1	15	33
Kiwoom	14	3	15	-	16	4	9	13	9	15	98
KT	7	1	4	0	-	2	1	2	2	0	19
LG	15	9	16	12	14	-	2	5	11	16	100
Lotte	14	12	14	6	14	14	-	2	8	14	98
NC	16	3	15	3	14	11	14	-	8	16	100
Samsung	15	14	15	5	14	5	7	8	-	15	98
SSG	2	0	1	1	16	0	2	0	1	-	23
-----------------------------------------------------------------------------------
Losses	98	44	111	43	124	44	43	44	43	121

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