Sussex skipper Chris Adams believes his match-winning hundred against Surrey on Wednesday was his best one-day innings for the county.

Adams made an unbeaten century in front of a full house at Hove as Sussex won off the last ball to virtually guarantee promotion to the first division of the National League.

The Sharks will be promoted on Sunday if Leicestershire fail to beat Yorkshire at Headingley and Derbyshire lose at home to Surrey. They have a ten point lead at the top with two games to go against Kent at Canterbury on September 18 and at home to Yorkshire a week later.

Adams, 35, has scored nine limited overs hundreds for the county and over 10,000 runs in one-day cricket during his career.

But he believes nothing tops Wednesday's 110 not out which helped put Sussex ten points clear at the top of the second division.

"I think that's my best one-day hundred," he said. "I've played some really good knocks, not just for Sussex but also Derbyshire, in all sorts of circumstances.

"But it's very rare you play like that and get the team over the line. It was a special moment.

"The 163 I got at Arundel against Middlesex in 1999 was a great innings but the boundaries were small that day and the wicket was nice and flat.

"Wednesday's was special bearing in mind how important the win was to our chances of getting promoted."

Adams left himself open to criticism when he twice turned down easy singles in Azhar Mahmood's final over which began with Sussex needing 11 to win.

But Mahmood lost his nerve. He bowled a no ball and Sussex scored two runs from the free hit which followed before sending down a wide.

Adams then came down the pitch to clip the fourth ball to the square leg boundary and took a single off the fifth to tie the scores.

"Once Azhar went full first ball I knew that if I got one away then it would go for four or six which brought the equation down massively in our favour," he added.

"When I got a single to level the scores I probably would have taken a tie and two points. But Mushy was brilliant - he was the coollest man in the ground.

"If you work as hard as this team does then somewhere along the line things will go for you. I kept saying to myself in the penultimate over: We're owed this'. Fortunately things worked out for us."