Ashes 2017/18: 4th Test, day 4, 5 things we learnt from the day

#1 Tom Curran impresses again

Curran once again looked threatening with the ball

Tom Curran is having a dream run on debut. He sent back the best Test batsman in the World at the moment - Steven Smith - in the first innings and then bowled with heat and purpose in the second. He was disciplined and rarely let Warner or Smith off the hook on day 4.

Curran's ability to stick to his length and line, move the ball and extract pace and bounce makes him a tricky customer to deal with. With Craig Overton set to return for the final Test, it remains to be seen if he gets a further chance - but day 5 could change everything.