Ian Chappell looks at the critical challenges which rival skippers Michael Clarke and Paul Collingwood will face in today's World T20 final

The conclusion of the World T20 tournament has some fascinating undertones that should add to the satisfaction of having the two best teams in the final.

This is Australia versus England the longest running feud in the game going almost all the way back to the convicts versus masters days. This is also a fore-runner of the much anticipated Ashes clash later this year; the winner of the T20 will have bragging rights at the start of that series.However, it's mostly an eagerly awaited contest between two in-form teams who match up pretty well. How well you ask?

Here's a look at some of the crucial questions that await the captains Michael Clarke and Paul Collingwood as they prepare for the final.

Pace versus variety:
Australia has placed all their eggs in the pace basket and they have the ideal venue, a bouncy Kensington Oval pitch to indulge themselves one last time. Aiding them in the quest to bounce their way to the title is the uncertainty surrounding the England opening pair. Craig Kieswetter and Michael Lumb are the biggest question mark in Collingwood's combination.