Henry Crocombe took his second hat-trick in eight days and third five-wicket haul of the season to put Sussex in a commanding position against Essex. The 24-year-old seamer claimed five wickets for 39 runs, taking his wickets in consecutive deliveries and reducing Essex from 171-3 to 177 all out in the first innings.
Crocombe's devastating spell came after Charlie Allison had reached 56 for Essex. His efforts contributed to Sussex securing a first-innings lead of 98 runs after they were dismissed for 275. Ari Karvelas scored 38 for Sussex, while Jack Leaning contributed 60 to their total.
Essex's collapse saw them lose their last seven wickets for just six runs. The collapse gave Sussex a lead of 188 runs by the close of play on the second day, with 11 wickets falling after tea.
Sussex extended their advantage in their second innings, reaching 90-4 by the end of the day. Jamie Porter reached a career milestone, taking his 600th first-class wicket during Sussex's first innings.
Crocombe, who is set to leave Sussex for Surrey at the end of the season, had previously taken a hat-trick against Somerset last week. His current form includes a season-best bowling figures of 5-39 against Essex.