Here is scenario in which Doosan makes the postseason with 20 additional wins (45 total).

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
              NC	116	25	3	0.8227	0.0
             KIA	111	29	4	0.7929	4.5
         Samsung	109	31	4	0.7786	6.5
              LG	96	46	2	0.6761	20.5
          Doosan	45	95	4	0.3214	70.5	See explanation of tie-breakers below.
          Kiwoom	45	95	4	0.3214	70.5	See explanation of tie-breakers below.
              KT	45	95	4	0.3214	70.5	See explanation of tie-breakers below.
           Lotte	45	95	4	0.3214	70.5	See explanation of tie-breakers below.
             SSG	45	95	4	0.3214	70.5	See explanation of tie-breakers below.
          Hanwha	45	96	3	0.3191	71.0

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	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	5	5	1	0	11
Kiwoom	1	-	1	5	1	8
KT	1	4	-	1	2	8
Lotte	2	1	3	-	1	7
SSG	3	2	4	3	-	12

The following table shows how many additional games each of the teams tied for fifth place win against each other in the scenario:
Team	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	0	10	0	10	20
Kiwoom	8	-	0	7	8	23
KT	0	11	-	10	0	21
Lotte	13	1	0	-	10	24
SSG	2	5	9	2	-	18

The following table shows how many games total each of the teams tied for fifth place win against each other in the scenario:
Team	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	5	15	1	10	31
Kiwoom	9	-	1	12	9	31
KT	1	15	-	11	2	29
Lotte	15	2	3	-	11	31
SSG	5	7	13	5	-	30

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	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	49	53	11	11	124
Kiwoom	24	-	13	44	14	95
KT	32	20	-	24	30	106
Lotte	18	26	26	-	22	92
SSG	21	18	40	27	-	106

The following table shows how many additional runs each of the teams tied for fifth place scores against each other in the scenario:
Team	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	0	10	0	10	20
Kiwoom	8	-	0	7	34	49
KT	0	11	-	27	0	38
Lotte	41	1	0	-	10	52
SSG	2	25	9	2	-	38

The following table shows how many runs total each of the teams tied for fifth place scores against each other in the scenario:
Team	Doosan	Kiwoom	KT	Lotte	SSG	Total
Doosan	-	49	63	11	21	144
Kiwoom	32	-	13	51	48	144
KT	32	31	-	51	30	144
Lotte	59	27	26	-	32	144
SSG	23	43	49	29	-	144


Doosan finished #5 in the standings last year.Kiwoom finished #10 in the standings last year.
Lotte finished #7 in the standings last year.

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
             KIA	26	16	1	101	0.619	0.0
              NC	25	17	1	101	0.595	1.0
         Samsung	24	18	1	101	0.571	2.0
          Doosan	25	20	1	98	0.556	2.5
              LG	23	20	2	99	0.535	3.5
             SSG	23	20	1	100	0.535	3.5
          Kiwoom	18	24	0	102	0.429	8.0
              KT	18	25	1	100	0.419	8.5
          Hanwha	16	26	1	101	0.381	10.0
           Lotte	14	26	1	103	0.350	11.0

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	0	0	10	0	0	0	0	10	20
Hanwha	10	-	0	6	3	0	5	0	0	5	29
KIA	10	11	-	12	10	6	14	8	4	10	85
Kiwoom	8	4	0	-	0	0	7	0	0	8	27
KT	0	6	0	11	-	0	10	0	0	0	27
LG	11	14	4	11	13	-	10	0	0	10	73
Lotte	13	7	0	1	0	0	-	0	0	10	31
NC	11	11	4	14	11	10	10	-	9	11	91
Samsung	10	13	5	11	14	10	11	0	-	11	85
SSG	2	4	0	5	9	0	2	0	0	-	22
-----------------------------------------------------------------------------------
Losses	75	70	13	71	70	26	69	8	13	75

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

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	5	15	4	1	3	1	10	45
Hanwha	12	-	1	8	6	1	6	1	1	9	45
KIA	13	15	-	16	13	10	16	10	6	12	111
Kiwoom	9	8	0	-	1	4	12	0	2	9	45
KT	1	9	3	15	-	1	11	3	0	2	45
LG	12	15	6	12	15	-	15	4	3	14	96
Lotte	15	10	0	2	3	1	-	1	2	11	45
NC	13	14	5	16	13	12	15	-	12	16	116
Samsung	15	15	8	14	16	12	14	3	-	12	109
SSG	5	6	4	7	13	1	5	0	4	-	45
-----------------------------------------------------------------------------------
Losses	95	96	29	95	95	46	95	25	31	95

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

# Doosan Bears magic number
# Doosan's magic number
# Bears magic number
# KBO Playoff Race