Cricket Australia's pace problems

WHAT'S THE PROBLEM WITH AUSTRALIA'S PACEMEN?

RYAN HARRIS - retired prior to the Ashes when he suffered another knee setback

MITCHELL JOHNSON - retired mid-Test at the WACA when he realised he'd lost the hunger

MITCHELL STARC - was managing bone spurs in right ankle, now sidelined with stress fracture in same foot

PETER SIDDLE - scans of his sore back showed no serious injury on Tuesday

JOSH HAZLEWOOD - management is worried about his workloads, will have to rest soon

PAT CUMMINS - sidelined with yet another stress fracture in his back

JAMES PATTINSON - hasn't played a Test since March 2014 due to a series of injuries but now fit

NATHAN COULTER-NILE - suffered a shoulder injury in October, while hamstring injury ruined his 2014/15 summer

JASON BEHRENDORFF - yet to play in almost a month due to suspected back injury

JOEL PARIS - highly rated but only made his first-class debut last weekend due to injury woes

JACKSON BIRD - recovered from back stress fractures that halted his three-Test career but yet to impress Rod Marsh.