DD on 9vs7
  • how come we do not double down on 9vs7 on Basic strategy? Even though BS saids not to DD based on percentages is the play a pretty close call ?
  • Roughly, EV = +.17 for hit, +.10 for doubling, so not that close, but close enough you could double if you so choose. Counting there is a playing index for such doubles where the EV for doubling passes the EV for hitting at a certain TC value.

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