|Royal London One-Day Cup, Ageas Bowl|
|Hampshire 343-6 (50 overs): Vince 103, Dawson 73 not out; Nash 1-34|
|Sussex 256 (41 overs): Machan 93, Wright 58; Dawson 6-47, Crane 2-46|
|Hampshire won by 87 runs|
A one-day career-best 6-47 from Liam Dawson coupled with a superb hundred from James Vince guided Hampshire to an emphatic 87-run win over Sussex.
Skipper Vince hit 103 from 89 balls and Dawson struck 73 not out as the hosts made 343-6, their highest limited-overs total at the Ageas Bowl.
Matt Machan (93) and Luke Wright (58) added 110 early in the Sussex chase.
But the visitors lost five wickets for 16 runs to be dismissed for 256 as slow left-armer Dawson ran through the tail.
He was backed up by 50-over debutant, teenager Mason Crane (2-46), who bounced back from going for 21 runs in his first over to capture the key wicket of Machan.
It meant a late 48 off 47 balls from Sussex's captain Ed Joyce was to no avail as Hampshire got their One-Day Cup campaign off to a winning start.
Hampshire all-rounder Liam Dawson:
"I know how I can contribute and it is nice to get off to a good start personally and a good start in a competition we weren't good in last season.
"It was especially good to get that amount of runs on that wicket. Anything over 300 would have been hard to chase because it was hard coming in as a new batsman on that wicket.
"It was brilliant from the captain [James Vince]. He is always brilliant in white ball cricket. He has been good for four or five years now and I'm sure England selectors will be looking at him again - tonight won't have done his England chances any harm at all."
Sussex batsman Matt Machan:
"I think we had a rush to the head, which is an effect of T20. We've come from that format in the last couple of weeks where you have to go from ball one.
"We could have played it slightly smarter, but that's the game and unfortunately we fell away at the end."