Doosan has been eliminated from first place.
Here are the current standings:
            Team	W	L	D	GL	PCT	GB
              NC	83	55	6	0	0.601	0.0
              KT	81	62	1	0	0.566	4.5
          Doosan	79	61	4	0	0.564	5.0
              LG	79	61	4	0	0.564	5.0
          Kiwoom	80	63	1	0	0.559	5.5
             KIA	73	71	0	0	0.507	13.0
           Lotte	71	72	1	0	0.497	14.5
         Samsung	64	75	5	0	0.460	19.5
              SK	51	92	1	0	0.357	34.5
          Hanwha	46	95	3	0	0.326	38.5

Doosan cannot catch up to NC.
Doosan's best possible winning percentage is 0.5643  (79 wins, 61 losses, and 4 draws).
NC's worst possible winning percentage is 0.6014  (83 wins, 55 losses, and 6 draws).