India have handed England their first series loss in the Bazball era but the head coach Brendon McCullum remains optimistic about the future. "There's times in games where we haven't quite screwed down our method just yet. We've lost here, didn't win the Ashes (2-2), but we're a better team than 18 months ago and we've got an opportunity in the next 18 months to do some special shit," said McCullum