"I don't think we are going to judge Nathan on a missed run out, when he wins Test matches for us regularly", the Aussie skipper was quoted as saying by cricket.com.au. His highest score so far is 28.
Ben Stokes produced his second "once-in-a-lifetime" efficiency of the summer time as his magnificent century powered England to an unprecedented, unthinkable one-wicket victory at Headingley to maintain the Ashes alive.
Fellow-fast bowler Stuart Broad told BBC Sport on the eve of the encounter that Archer will demand to bowl at Smith as soon as he walks to the wicket. "Now we've got to work out what we're going to do".
And in the words of Leach, it will "all count for nothing" if England don't take the coming test.
The gusts had debris constantly drifting across the field from the huge temporary stand and, at one stage, the bails were blown from their grooves with such regularity that the umpires simply did without. One good thing that will happen for the Kangaroos is that their premier batsman Steve Smith will return to the fold after missing the third match due to concussion effects.
"I love talking to him about the game and learning off him, it's a great experience and he's a great player". Langer, hit several times on the head during his career as an Australia opening batsman, was confident Smith could overcome any doubts he may have felt after being felled by Archer.
After being overlooked for the first three Tests, Starc ripped into an outclassed Derbyshire XI in last week's tour game - finishing with match figures of 7-85 in an ominous display, while Siddle took 3-32 in a typically economical performance.
When Broad had David Warner caught behind for a duck in the first over - the fifth time he has dismissed the opener in the series - and followed that by trapping Marcus Harris lbw, it looked like England would ride the momentum of Headingley. But Stokes' heroics shouldn't distract them from the fact there are still areas where England must improve if they're to reward their backers.
Labuschagne, however, was eventually bowled by a nip-back ball from seamer Craig Overton, the only change to England's side, having faced 128 balls including 10 fours.
However, after that, the England bowlers were collectively below par, even if they can perhaps be slightly excused given the hard conditions they were having to battle.