Division One leaders Sussex's crucial County Championship clash with Durham was overshadowed on Wednesday by the serious injury to bowler Rana Naved-ul-Hasan.
Play was suspended for more than 45 minutes at the Riverside after the 29-year-old Pakistan paceman dived into a fence trying to prevent a boundary.
He was taken to hospital with what was later confirmed as a dislocated shoulder and will be out for the rest of the season.
Sussex, meanwhile, fought back into contention after a disappointing first day on Tuesday.
A maiden century from Mark Stoneman helped Durham establish a strong position in reply to Sussex's 291 all out but the hosts failed to capitalise.
With captain Dale Benkenstein also hitting 67, Durham were going strong on 233 for two but they then slipped to 316 all out with Saqlain Mushtaq taking four for 59.
But with Sussex 85 for four at the close, a lead of 60, the game was still delicately poised.
Hampshire's title hopes looked to be running aground as Kent took firm control at the Rose Bowl.
At the close the hosts were struggling to avoid the follow-on at 186 for seven, 309 behind after Kent were earlier bowled out for 495.
James Tredwell had taken four for 46 after earlier frustrating Hampshire with the bat.
Martin van Jaarsveld failed to add to his overnight 112 but Tredwell (62) shone in a stand of 83 for the seventh Kent wicket with Geraint Jones (63).
Lancashire, also still in title contention, established a first-innings lead of 205 against Warwickshire at Old Trafford.
India batsman VVS Laxman hit 103, before becoming one of five victims for Neil Carter, as Lancashire posted 311.
Yet Warwickshire were going stronger in their second innings, reaching 125 for two after 50 from Ian Westwood to cut Lancashire's advantage to 80.
In the Second Division, Middlesex were well on the way to setting Leicestershire a tough target after fighting back at Southgate.
Leicestershire slipped from 144 for one in reply to Middlesex's first-innings 176 to 190 all out after India spinner Murali Kartik took six for 85.
Middlesex closed on 206 for four in their second innings, a lead of 192, with captain Ed Smith unbeaten on 101 from 196 balls.
Stephen Peters hit 104 as Northamptonshire took control against Glamorgan at Wantage Road.
Rob White weighed in with 75 and David Sales 78 as Northants reached 369 for eight in reply to 280.