Nottinghamshire mathematically assured themselves of promotion to the County Championship First Division after securing the bonus point they needed yesterday.
They went into their match at Somerset 22 points ahead of third-placed Middlesex and when Andre Adams removed James Hildreth to reduce the hosts to 84 for 3 in reply to Nottinghamshire's 158 all out, they could no longer be caught by their rivals.
There was some good news for Somerset, whose captain Justin Langer has agreed to stay with the county for another year on their return to the First Division. The former Australia batsman has guided the club to the Second Division and NatWest Pro40 titles. Langer's countryman Cameron White will leave at the end of the season.
Somerset's director of cricket, Brian Rose, said: "I am delighted to say I have shaken hands with Justin over a contract for next season and he will be continuing as captain.
"It was a difficult choice with the new ruling about only one overseas player because Cameron White has also done tremendous things for us. But his immediate future looks to be with Australia."Reuse content