With all the major outcomes already decided in LV= County Championship Division One, the only issues at stake in the final round of games were the final placings.
Champions Warwickshire were looking to sign off the season in style and could not have had a better start as they reduced Nottinghamshire to 92 for seven just after lunch.
Chris Woakes and Keith Barker each took two wickets as none of the home side's batsmen passed 18.
Sussex found themselves in early trouble at Durham as they slipped to 110 for five as Graham Onions and Chris Rushworth each claimed two victims.
Luke Wells scored 25 at the top of the order with the unbeaten Kirk Wernar's (25no) and Ben Brown (16no) providing some resistance in the lower middle order.
Abdur Rehman claimed all four Worcestershire wickets to fall as Somerset seized the early initiative at Taunton.
Openers Philip Hughes (42) and Daryl Mitchell (24) had put on 74 for the first wicket but once they were separated Rehman took advantage to reduce the visitors to 142 for four.
No play was possible in Lancashire's match at home to Surrey and stumps were drawn early.