Oliver Hannon-Dalby led a tireless Warwickshire bowling performance in strength-sapping conditions on the opening day of the Bob Willis Trophy match with Gloucestershire at Bristol. The tall seamer toiled away with precision in relentless heat to claim four for 24 from 20 overs as the home side were restricted to 191 for eight after being asked to bat first, Ben Charlesworth top-scoring with 51. Hannon-Dalby received excellent support from skipper Will Rhodes (three for 18) and the rest of the Warwickshire attack on a slow pitch that ensured hard work for batsmen and bowlers alike.