I'm reminded of that scene in the Battle of Britain when everything is up and Churchill asks Park "what other reserves have we?" ................... "There are none" came the reply.It's harder for Stokes and Bairstow to get say 120 more runs than NZ to get one of them out, but it is all about that wicket, because if NZ don't get it within the next 100 runs, England will be big favourites then.