Michael Clarke's meagre contribution with the bat was his biggest frustration during the failed Ashes campaign, but the inability of his bowlers to build pressure on England was not far behind it.
The just-released Ashes Diary 2015 documents how Clarke sought to tinker with his technique through the series in England in a bid to snap what became an alarming form slump. This included a more deliberate back-and-across movement at the point of delivery, because he realised his reflexes were no longer good enough to rely on instinctive movement as the ball was delivered, and trying to overcome what he identified as a potential cause for struggles at the crease: that his head had begun to droop and point to the right of the incoming bowler rather than straight at them.
The lack of alarm Clarke felt at his string of low scores - "but that's cricket" was a regular explanation of why he was getting out cheaply - changed markedly after his experience batting on a pitch "possessed by the devil": at Trent Bridge, the venue Australia officially relinquished the Ashes at. 
"I felt extremely scratchy. The harder I tried the worse I seemed to feel. I guess this was the moment I realised that was how it had been through the series. I just hadn't recognised it - or maybe I'd refused to accept it," Clarke wrote about his stint on the crease at day two, the day after his team had been humiliated for 60 in their first innings.
Having arrived in the middle motivating himself about how it was his "last chance to save the series", Clarke's second-innings dismissal after grappling with the ball swinging both ways - something Australia's bowlers could not achieve - triggered his decision to quit, which he announced the following morning.
The then-captain explained he had overheard the curator telling former England captain Michael Vaughan before the toss that whoever bowled first "should take six wickets before lunch", given the conditions.
"That wicket was possessed by the devil. If we'd have bowled first, I'm almost certain we would've wreaked the same havoc with the ball," he wrote.
Clarke's dismay at how Australia batted at Trent Bridge was less than it was about how bowlers for their inability to challenge England's batsmen in the preceding Test, at Edgbaston, as their momentum from their emphatic victory at Lord's disappeared.
"When England's innings started, it was still dark and cloudy, and the ball was really swinging - seaming, too. I can't remember many times in my Test career that we've had better bowling conditions at our disposal. But we couldn't execute. Our bowlers couldn't hit the right areas for long enough. England were positive and rode their luck, but they got away with it because our bowling was lousy," he wrote.
"They've got to get back to bowling more maidens, especially [Josh] Hazlewood - getting the ball through to the keeper and building dots. If they can build up pressure from one end, then I can attack from the other, either with one of the left-armers or with Nathan Lyon."
Clarke lamented that neither Mitch Johnson nor Josh Hazlewood were effective new-ball partners for Starc, the left-armer he reckoned "can bowl all over the place at times, but he produces a lot of wicket balls".
Starc was Australia's leading wicket-taker for the series, with 18, but his problems with economy rate saw selectors consider dropping him - not Hazlewood - for the match at Trent Bridge in favour of Siddle, whose reliability was praised by Clarke.
"He give me a whole other level of control in our bowling. You know what you're going to get: guaranteed line and length," Clarke wrote of Siddle.
"He's the kind of bowler any captain wants in his attack: when he's bowling well he can put the cherry on a 50-cent piece for hours and hours."
Despite Clarke's praise of Siddle, he admitted to surprise that the veteran was chosen ahead of Pat Cummins for the final Test at the Oval, after Hazlewood was left out.
Clarke's citing of Australia's bowling as a contributor to England's winning the series is not reflected in the statistics. Australia's 80 wickets for the series came at an average of 28.04, just ahead of England's 30.3. The visitors' tally of 34 maidens from 634 overs was just one fewer than what the hosts managed in 685. The economy of the teams' bowlers was identical: 3.54 runs per over.
Ashes Diary 2015, published by Pan Macmillan.