Rob Yates and Sam Hain punished Kent heavily for a miscalculation with the toss as Warwickshire amassed 367 for three on the opening day of their LV= Insurance County Championship match at Edgbaston.

Yates struck 128 (217 balls) and Hain an unbeaten 124 (235) to enhance their England credentials at the expense of a Kent attack which toiled on a good batting surface after captain Sam Billings chose to field.

That appeared a curious decision on a pitch which looked firm and true and so it proved as Yates and Hain added 166 for the third wicket before Dan Mousley added late impetus with a sparkling unbeaten 72 (78 balls).