Ashes-holders England thrashed their arch-rivals by 347 runs at 'the home of cricket' yesterday, with over a day left, to strengthen their grip on the urn.
Australia's main problem, as it was in a far narrower 14-run reverse in the first Test at Trent Bridge, was a lack of runs from their specialist batsmen.
Whereas England built competitive totals in both innings at Lord's on the back of hundreds by Ian Bell (109) and man-of-the-match Joe Root (180), the highest individual Australia score was Usman Khawaja's second innings 54.
Clarke, Australia's best batsman and a proven world-class performer, made 51 on Sunday but that only took his average for the series to 25.50, with none of the tourists having made an individual hundred in the first two Tests.
The last time any side came from 2-0 down to win the Ashes was in 1936/37 when Australia, inspired by Don Bradman, cricket's greatest Test batsman, eventually won 3-2 on home soil.
However, despite the weight of history against him, Clarke said: "I'm still confident we can win this series.
"We need to perform better to win this third Test but we have time to prepare," added Clarke, with Australia set to play a three-day tour match against Sussex starting Friday before facing England again at Old Trafford, where the next Ashes encounter gets underway on August 1.
