Blackwell is averaging more than 50 in first-class cricket for Durham
Ian Blackwell hit an unbeaten 107 to give defending champions Durham the advantage after day one of their Championship clash with Warwickshire.
The Bears appeared to be taking a hold at Edgbaston after Chris Woakes (3-70) reduced the visitors to 120-4.
But Blackwell shared stands of 86 with Phil Mustard and 98 with Gareth Breese for the fifth and sixth wickets to turn the innings around.
Breese was out just before the close as Durham reached 322-6 at stumps.
Mark Stoneman was with Blackwell when the umpires called it a day having returned to the crease after earlier retiring hurt with a thigh strain.
But the day belonged to former Somerset all-rounder Blackwell, who built on his recent good form by first passing 50 for the fifth time in six four-day games before going on to complete his maiden Championship century for the county.
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