Sussex declared on their overnight scoring leaving Worcestershire a huge total of 421 in order to win the match, or at least bat the day out for a draw.
It was to prove another disappointing day for the home side as they were bowled out for 169. Daryl Mitchell provided some stout resistance with an innings of 61 from 109 deliveries before being trapped LBW by James Anyon shortly after the resumption after the lunch interval. A 3rd wicket partnership of 59 between Mitchell and Moeen Ali in the morning session did raise some hope that the home side would be able to bat the day out. However when Ali was caught at slip by Matt Prior edging a wide delivery from Chris Nash for 25 shortly before the lunch interval it was clear that Sussex were in total control of the match.
Anyon took 4-55 and Amjad Khan 3-43 as the visitors won the match by 251 runs to ensure their Division 1 status for the next season, thanks to results elsewhere on the same day.
Worcestershire go into their final match still in a relegation spot, but requiring just one point to go ahead of the team above them and with a 17 point advantage over the bottom placed team.
Sussex (375 & 267-4 dec.) beat Worcestershire (222 & 169) by 251 runs.
Sussex 23 points. Worcestershire 4 points.