Root is the key - Vaughan previews day four

Today at the Test's Michael Vaughan says Joe Root will be the key on day four of the first Ashes Test between England and Australia.

DAY THREE REPORT: Australia hit England between Edgbaston showers

DAY THREE HIGHLIGHTS:First Test finely balanced after rain ruins day three

Watch extended highlights from each day's play between England and Australia on BBC Two and BBC iPlayer.

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