Abdur Rehman finished with match figures of 14-101 as Somerset clinched runners-up spot in Division One with an innings and 148-run victory over relegated Worcestershire at Taunton.
The Pakistan left-arm spinner took 5-36 as the visitors stumbled to 152 all out in their second innings, Alexei Kervezee top-scoring with 76 and Peter Trego claiming his 50th first-class wicket of the season.
The hosts took 23 points to Worcestershire's two as their players guaranteed themselves a share in a £162,000 cheque for finishing second behind champions Warwickshire.
Somerset had batted on at the start of the day before declaring their first innings on 512-9, with a lead of 300. Nick Compton finished unbeaten on 155, just six short of 1,500 first-class runs for the season.
A three-day finish always looked likely and Worcestershire lost two wickets in scoring 39 before lunch. Phil Hughes edged Trego to wicketkeeper Steve Snell and Daryl Mitchell was caught at slip off Rehman.
The wickets continued to tumble after lunch and victory was sealed with over four sessions to spare when Kervezee was pouched at slip by Marcus Trescothick off man-of-the-match Rehman.
Nick Compton cracked another century for Somerset to further strengthen his claims for an England place, while Marcus Trescothick made 146 against Worcestershire.
The leading run-scorer in first-class cricket was returning to action after a back injury and wasted no time putting Worcestershire to the sword - finishing day two unbeaten on 115, while Marcus Trescothick hit 146 as the hosts racked up 451-7 - a first innings lead of 239.
Somerset began the day on 142-0, in reply to Worcestershire's 212, and suffered an early loss as Arul Suppiah was caught and bowled by Moeen Ali after adding just two to his overnight 73.
Trescothick, who resumed on 66, had a few hairy moments against the bowling of Alan Richardson but survived to reach his century before lunch.
Richardson eventually got his man after the former England opener edged to slip, having managed 19 fours in his five-and-a-half-hour knock.
The bowler then trapped James Hildreth (19) and Chris Jones (one) - finishing the day with figures of 3-65 off 35 overs.
But Compton was not to be denied. The 29-year-old dug in to reach his ton off 248 deliveries, with nine fours and a six, and he was ably assisted by a cameo from Peter Trego, who hit a run-a-ball 45 before being dismissed by Chris Russell.
Abdur Rehman was in fine form as he helped Somerset bowl out Worcestershire for 212 on the opening day of the final LV= County Championship match of the season at Taunton.
The Pakistan left-arm spinner produced career-best figures of 9-65 as their opponents collapsed from a promising 74 without loss.
Phil Hughes (42) and Alexei Kervezee (40) dominated the new ball in the morning, rattling up quick runs, until Rehman was introduced into the attack at the Old Pavilion End.
However, the 32-year-old could not achieve something only two Somerset players have ever done by claiming all 10 wickets as Peter Trego had Chris Russell caught behind for two to register his 49th Championship wicket of the season.
By the close Somerset had reached 142 without loss in reply, with Arul Suppiah unbeaten on 73 and Marcus Trescothick 66 not out.
Skipper Trescothick eased his way to a 75-ball half-century, including nine fours, and Suppiah soon followed, bringing up his fifty with a six and a four in the same over from Moeen Ali.