On a board like this 8, 7 is a gut shot that requires a 9 in order to improve a made straight. In order to visualise this, let’s say that the flop is Q, T & 6.
This is only half of the number of outs that you would have with an open ended straight draw. The typical definition of a gut shot is that you have four cards to improve your draw. Gut shots in poker are also known as inside straight draws and refer to a kind of draw that you can catch in poker.
