Chicago is eliminated from first place.

To show that Chicago is eliminated from first place, we start with the current standings:
            Team	W	L	GL	PCT	GB
       Las Vegas	34	6	0	0.850	0.0
        New York	32	8	0	0.800	2.0
     Connecticut	27	13	0	0.675	7.0
          Dallas	22	18	0	0.550	12.0
         Atlanta	19	21	0	0.475	15.0
       Minnesota	19	21	0	0.475	15.0
      Washington	19	21	0	0.475	15.0
         Chicago	18	22	0	0.450	16.0
     Los Angeles	17	23	0	0.425	17.0
         Indiana	13	27	0	0.325	21.0
         Seattle	11	29	0	0.275	23.0
         Phoenix	9	31	0	0.225	25.0
           Total	240	240	0

Chicago can finish the season with at most 18 + 0 = 18 wins and will finish the season behind the following teams:
Las Vegas has already won 34 games.
New York has already won 32 games.
Connecticut has already won 27 games.
Dallas has already won 22 games.
Atlanta has already won 19 games.
Minnesota has already won 19 games.
Washington has already won 19 games.
# Chicago Sky's magic number
# Chicago's magic number
# Sky's magic number
# WNBA Playoff Race