Ashes 2017: 2nd Test, day 4, 5 things we learnt from the day

#3 Alastair Cook going down rapidly

Cook has been the most susceptible of England batsmen on this tour

When Nathan Lyon said that this Ashes would see quite a few retirements from the opposition camp, he must have meant to take a dig at Alastair Cook. The former England captain has been a sitting duck to the sheer pace in the Australian attack and him hanging onto the back-foot hasn't helped matters.

In the second innings at Adelaide, Cook took his time to get settled, appeared more in his zone than at any time in this series and then nearly threw it all away when he was trapped in front, only for Australia to not opt for a review.

His lucky break didn't last long, though, as Nathan Lyon came around the wicket to dismiss him leg before wicket for 16.