That means very little to many teams. In the past, teams have been sellers (TB & Pitt come to mind) while in the heat of a playoff run.
AL Sellers
100% sure
5-BAL, DET, KCR, TOR, SEA
75% sure
2-CWS, LAA
50+% sure
1-TEX
NL
100% sure
3-MIA, NYM, SF
75% sure
4-CIN, PIT, COL, SD
50+% sure
2-STL, AZ
I have 14 teams as very likely sellers (75%+) and 3 more that are about 50-50 now. Things may change by the deadline, but I'm guessing 15+ teams will be sellers.
I certainly may be wrong, but I think close to 15 teams will be shopping players- some may not be good players, and some may be just salary dumps.