England suffer surprise collapse
England encountered unexpected difficulties on the final morning against a WA Chairman's XI as the run-fest was rudely interrupted in Perth.
After Ian Bell retired out with 115 to his name, ending his third-wicket stand of 193 with Jonathan Trott (108no), three more batsmen came and went for the addition of 13 runs in the space of four overs.
Trott at least stood firm to ensure England should not surrender a significant first-innings lead, as they took lunch on 378 for six in reply to 451 for five declared.
They had nonetheless suffered a sudden fall from grace, having appeared set to move seamlessly past their opponents in a sure-fire draw in this Ashes tour opener.
Instead, they faltered alarmingly - and into the bargain, found out next to nothing about the claims of either Gary Ballance or Ben Stokes to the undecided Test match number six spot this winter.
The turn of events could scarcely have been envisaged, on this blameless pitch, while Bell was completing his hundred with two successive sumptuous fours off Matt Dixon.
The first flashed past cover and the next down the ground to bring him yet another three-figure score - this one including 17 fours and two sixes from 153 balls - to go with his three hundreds in last summer's Ashes.
It was decided Bell had done enough, and the time was right to give others a chance to see what they could do against the second new ball.
Sadly for Ballance, it was the minimum, as he edged a useful delivery behind from Ryan Duffield to add a golden duck to the zero he made in two balls in his only previous innings for England - in a one-day international against Ireland in Dublin three months ago.
Matt Prior, leading his country for the first time in Alastair Cook's injury-enforced absence here, clumped a pull high over the infield for four before edging a drive behind for Duffield's second wicket in the over.
Ben Stokes managed a boundary too, down the ground off Jim Allenby, but the Glamorgan all-rounder got his revenge as the left-hander became a third consecutive caught-behind departure - edging an attempted cut.
Trott remained a reassuring presence, however, grinding out his century from exactly 200 balls having hit 10 fours and a collector's-item six - muscled over cow corner off a Michael Beer full toss.
That blow was followed by a broadening of the shoulders from a player rarely associated with clearing the ropes.
When the collapse then set in, England were thankful - as they so often are - for Trott's reliable runs, by whatever means.