Ben McKinney and Alex Lees produced a triple-century opening stand as Durham dominated the opening day of the Rothesay County Championship Division Two match with Gloucestershire at the Seat Unique Stadium, Bristol.

Having been invited to bat first, the visitors romped to 456 for two by the time bad light ended play 7.5 overs early, with 21-year-old McKinney hitting a career-best 214 not out and Lees 129. Their partnership of 305 in 58 overs featured 49 fours and three sixes as they took advantage a benign pitch and a short boundary on one side of the ground.

David Bedingham weighed in with an unbeaten 76 on another sobering day for Gloucestershire following an innings defeat by Middlesex in their first game. Will Williams was their only successful bowler with two for 107.

Gloucestershire captain Cameron Bancroft was soon made to rue his decision to field as McKinney and Lees piled up 143 runs in the morning session with few alarms. Even when either made an error, the ball seemed to fly invariably to the boundary off the edge.

McKinney was the more aggressive and had reached 84 by the interval, his innings laced with some sumptuous off-drives, including one off Gabe Bell which brought up the half-century stand in the 12th over.

Lees followed him to fifty just before lunch and the afternoon session brought more of the same, the ball flashing over a fast outfield. McKinney lofted sixes off spinners Olly Price and Graeme van Buuren to reach a 104-ball hundred.

Lees survived a chance to point on 90 off Craig Miles before going to an equally impressive century off 157 deliveries with 16 fours. Soon McKinney had reached a personal milestone, a single off van Buuren taking him past his previous best first class score of 153, made against Warwickshire at Chester-le-Street in 2024.

The stand was finally broken off the final ball of the 58th over when Williams managed to dart a ball in off the seam to Lees and bowl him between bat and pad. Two overs later Williams struck again as Emilio Gay edged to slip where Bancroft took a good low catch.

McKinnney was unbeaten on 180 at tea, with Durham 339 for two. He had added two to his score when rain started falling and interrupted play at 4.35pm. It proved a brief stoppage and soon normal service was resumed as Bedingham cover drove yet another four off Matt Taylor.

The floodlights had been on for some time and Gloucestershire persisted with spin when they might have taken the new ball. McKinney had slowed the pace of his innings as he approached a maiden double hundred.c

First Bedingham went to a fluent half-century off 76 balls, with seven fours, and the pair brought up a hundred stand in just under 24 overs.

The big moment for McKinney soon followed with a lofted off drive for four off Price. The tall left-hander had faced 232 balls and extended his boundary count to 33 fours and 3 sixes in a memorable exhibition of sweetly-timed strokes, becoming the youngest player to register a double hundred for Durham.

Gloucestershire took the new ball at 416 for two in the 85th over, but it made little difference as Bedingham struck a straight six off Williams. Soon Durham were celebrating maximum batting points and it was a relief to the home side when bad light ended a day to forget.

McKinney had faced 246 balls in an innings spanning five hours and 46 minutes.