Hampshire were left clinging on in their match with Lancashire at Southampton as they continued to lose wickets at an alarming rate.
James Anderson destroyed Hampshire's first innings, claiming 6 for 23 as the home side fell 51 runs short. And, despite losing Alec Swann and David Byas for ducks, the visitors made 187 – setting Hampshire a target of 238. But they made an appaling start and ended 54 for 4, John Wood and Anderson taking two each.
Steady progress from Sussex kept their match with Warwickshire at Edgbaston evenly balanced. Chasing the home side's 493, Sussex looked comfortable on 325 for 6 before collapsing to 377 all out. Warwickshire declared on 284 for 6. But Sussex are not out of the hunt yet, needing 395 for their nine remaining wickets.
In the Second Division, a disastrous morning for Durham, already following on, saw them lose by eight wickets to Nottinghamshire at Chester-le-Street.
Glamorgan moved into an imposing first-innings lead against Essex at Chelmsford, clocking up 575 in reply to the home side's 231. But the Essex openers Darren Robinson and William Jefferson fought a fantastic rearguard action, reaching 119 and 109 respectively as Essex moved to 281 for 2 at the close.
Middlesex made good progress in response to Gloucestershire's mammoth 494 all out at Cheltenham but faltered with their lower order, ending their innings on 363. Phil Tufnell threw the game wide open with seven wickets for 52 as Gloucestershire stumbled to 175 for 8, a lead of 306.
In response to Derbyshire's 388 all out at Northampton, Northamptonshire were 178 runs behind going into the second innings. Only Jeff Cook's 88 maintained respectability as his side stuttered to 210. Derbyshire turned the screw, closing the day with a 366-run lead.
Join our new commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies