Michael Carberry hammered 148 not out to help Hampshire ease to a six-wicket win over Scotland at the Ageas Bowl.
Carberry shared in century stands with Simon Katich (41) and Liam Dawson after Hampshire had slumped to 15-2, needing 231 to complete a double over their opponents.
The left-handed opener needed just 122 deliveries to score his runs, belting three sixes and 20 fours to steer his team over the line with 23 balls to spare.
They had at one stage slipped to 131-4 before Dawson came out to provide some support though he was a minor partner in the late carnage, finishing 27 not out.
Scotland had earlier managed to make 230-9 from their 40 overs, the experienced Majid Haq top-scoring with an unbeaten 53 at a run-a-ball rate.
He put on a stand of 80 with South African-born Preston Mommsen which held up Hampshire after the first five wickets had fallen for 97 runs.
Mommsen made 48 before becoming one of three victims for left-arm spinner Danny Briggs, including dismissing Craig Wallace and Moneeb Iqbal with successive deliveries and both to leg-before decisions.