Here is scenario in which Doosan makes the postseason with 24 additional wins (47 total).

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
              LG	124	20	0	0.8611	0.0
         Samsung	100	40	4	0.7143	22.0
             KIA	99	41	4	0.7071	23.0
              KT	101	42	1	0.7063	22.5
          Doosan	47	93	4	0.3357	75.0	See explanation of tie-breakers below.
          Kiwoom	47	93	4	0.3357	75.0	See explanation of tie-breakers below.
             SSG	47	93	4	0.3357	75.0	See explanation of tie-breakers below.
              NC	47	94	3	0.3333	75.5
          Hanwha	46	94	4	0.3286	76.0
           Lotte	46	94	4	0.3286	76.0

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	SSG	Total
Doosan	-	3	3	6
Kiwoom	2	-	4	6
SSG	3	2	-	5

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	SSG	Total
Doosan	-	0	9	9
Kiwoom	9	-	0	9
SSG	0	9	-	9

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	SSG	Total
Doosan	-	3	12	15
Kiwoom	11	-	4	15
SSG	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	Doosan	Kiwoom	SSG	Total
Doosan	-	41	25	66
Kiwoom	21	-	34	55
SSG	20	33	-	53

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	SSG	Total
Doosan	-	0	9	9
Kiwoom	9	-	0	9
SSG	0	12	-	12

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	SSG	Total
Doosan	-	41	34	75
Kiwoom	30	-	34	64
SSG	20	45	-	65

Doosan wins the second tie-breaker against Kiwoom


To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
         Samsung	30	18	1	95	0.625	0.0
              LG	30	20	0	94	0.600	1.0
              KT	29	20	1	94	0.592	1.5
             KIA	28	22	1	93	0.560	3.0
          Hanwha	24	25	0	95	0.490	6.5
          Doosan	23	27	1	93	0.460	8.0
             SSG	22	27	1	94	0.449	8.5
           Lotte	20	28	1	95	0.417	10.0
              NC	20	28	1	95	0.417	10.0
          Kiwoom	20	31	1	92	0.392	11.5

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	-	7	0	0	0	0	0	8	0	9	24
Hanwha	3	-	0	3	0	0	5	6	0	5	22
KIA	10	10	-	10	10	0	10	10	0	11	71
Kiwoom	9	8	0	-	0	0	0	10	0	0	27
KT	10	10	0	10	-	0	12	10	11	9	72
LG	10	10	11	10	11	-	10	11	11	10	94
Lotte	10	5	0	10	0	0	-	1	0	0	26
NC	4	4	0	0	0	0	8	-	0	11	27
Samsung	10	10	8	10	0	0	11	10	-	11	70
SSG	0	5	0	9	1	0	10	0	0	-	25
-----------------------------------------------------------------------------------
Losses	66	69	19	62	22	0	66	66	22	66

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	0	2	0	0	0	0	1	1	3
Hanwha	0	-	0	0	0	0	2	1	0	1	4
KIA	0	0	-	0	0	0	1	0	3	0	3
Kiwoom	2	0	0	-	1	0	0	0	0	1	3
KT	0	0	0	0	-	0	0	0	0	0	0
LG	0	0	0	0	0	-	0	0	0	0	0
Lotte	0	2	0	0	0	0	-	1	0	0	3
NC	0	1	0	0	0	0	1	-	0	1	2
Samsung	0	0	3	0	0	0	0	0	-	0	3
SSG	1	1	0	1	0	0	0	0	0	-	3
-----------------------------------------------------------------------------------
Total	3	4	3	3	0	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	-	8	3	3	2	2	4	11	2	12	47
Hanwha	8	-	2	7	2	3	7	8	1	8	46
KIA	13	14	-	16	11	2	14	12	3	14	99
Kiwoom	11	9	0	-	2	2	2	14	3	4	47
KT	14	14	5	13	-	4	14	14	12	11	101
LG	14	13	14	14	12	-	14	15	13	15	124
Lotte	12	7	1	14	2	2	-	2	3	3	46
NC	5	7	4	2	2	1	13	-	0	13	47
Samsung	13	15	10	13	4	3	13	16	-	13	100
SSG	3	7	2	11	5	1	13	2	3	-	47
-----------------------------------------------------------------------------------
Losses	93	94	41	93	42	20	94	94	40	93

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

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