Multiple centuries have been almost commonplace so far this summer, but today we've had only two - by Durham's Scott Borthwick and Adam Lyth of Yorkshire.
Notts have made an undistinguished start to a run-chase against Warwickshire and positive results are on the cards in a number of other matches as well.
The weather forecast in some areas looks a bit dodgy for the final day - but let's hope the rain stays away.
Join us for full coverage, as always, from 10:45 BST or thereabouts. Until then, have a good evening.
Here are the match positions at the end of day three:
Durham 411 & 239-4 v Lancashire 326 - still in play
Durham lead by 324
Warwickshire 373 & 236 v Nottinghamshire 383 & 21-3
Nottinghamshire need another 206 to win
Somerset 562-7 dec v Yorkshire 306-9
Yorkshire trail by 256
Middlesex 395 v Surrey 242 & 98-0 (f/o)
Surrey trail by 55
Essex 538-7 dec v Derbyshire 280 & 150-1 (f/o)
Derbyshire trail by 108
Gloucestershire 262 & 302-8 v Glamorgan 330
Gloucestershire lead by 234
Kent 396 & 88-1 v Northamptonshire 498
Kent trail by 14
Worcestershire 491 v Sussex 278 & 137-3 (f/o)
Sussex trail by 76
- Copyright: Rex Features
An unbroken last-wicket partnership of 69 between Yorkshire's Jack Brooks (34*) and Steven Patterson (32*) frustrated Somerset at the end of an extended third day, which was interrupted by the weather on three occasions.
The defending champions, for whom Adam Lyth made 106, lost five wickets for 11 runs before Brooks and Patterson came together for the final 18.4 overs. Yorkshire are still 256 behind, and Somerset are the only side than can win this game - if their bowlers are up to the task and the rain stays away.
Greg Smith and Brendan Taylor survive the final 13 balls after a dreadful start by Notts in their bid to score 227 for victory. Barring an intervention by the weather, a win by one side or the other looks certain on the final day, and it may be Warwickshire who are the more confident following their three late wickets.
BBC Sport's Isabelle Westbury:
“A flurry of wickets after tea made amends for the stoic afternoon session as Gloucestershire lost four for 31 runs, and Glamorgan bowler Michael Hogan ended the day with four of his own. An eighth-wicket partnership of 31 continues to frustrate the visitors, who will want to be back out and chasing as soon as they can tomorrow morning.”
Essex finally achieved a breakthrough when Billy Godleman was bowled by teenager Aaron Beard for the second time in the match, having made 75 off 127 balls with 10 fours.
Derbyshire still trail by 108 after following on, with Hamish Rutherford 20 not out and Tom Taylor on six. Chesney Hughes retired on 26 because of illness, and the visitors will hope he can resume his innings on the final day.Copyright: Rex Features
If Nottinghamshire are going to win this game, they're going to have to do it the hard way after losing three wickets in six overs at the start of their run-chase.
Steven Mullaney went for a duck in Keith Barker's first over and the left-armer followed that with the wicket of first-innings centurion Michael Lumb for eight. Luke Fletcher, sent in as nightwatchman after taking 4-25 in Warwickshire's second innings, lasted four ball before falling to Chris Woakes.
Notts need another 207 - Warwickshire need another seven wickets.
A day to remember for Durham's Scott Borthwick and Barry McCarthy. Borthwick (103*) completed his second hundred of the match just before stumps, only the fourth batsman to achieve the feat for the county after Dean Jones, Paul Collingwood and Keaton Jennings.
Pace bowler McCarthy took 5-70 earlier in the day and the north-east county will now be contemplating a final-morning declaration with Lancashire already 324 behind.
There are seven overs remaining at Bristol, but the players are off the field. Gloucestershire are 234 ahead, with Craig Miles 23 not out and David Payne on nine, a better position than they might have been in, had Graham Wagg not suffered an arm injury on day two. Opener Cameron Bancroft has top-scored for the home side with 70.
- Copyright: PA
Rory Burns (57*) and Arun Harinath (37*) have gone a long way to ensuring Surrey will not lose the match after Middlesex enforced the follow-on at The Oval.
The home side closed just 55 behind, with off-spinner Ollie Rayner unable to add to his 6-79 in their first innings. He only conceded 12 runs from 11 overs as Middlesex skipper Adam Voges tried eight different bowlers in search of a breakthrough.
Barring a dramatic collapse by one of the sides, a draw looks the most likely result at Wantage Road after Northants only managed to pick up one wicket after establishing a 102-run first-innings lead, with Kent closing just 14 in arrears.
Adam Rossington (78 of 69 balls) and Rory Kleinveldt (71 off 85) provided the most entertaining batting of the day, while team-mate Olly Stone (60) scored a maiden half-century for the home side.
The wicket of Ed Joyce, caught in the slips off Ed Barnard for 74 just a few minutes before stumps, has given Worcestershire a great chance of victory at New Road, if the final-day weather is kind. Sussex are still 76 behind, with Ross Taylor 16 not out and nightwatchman Lewis Hatchett on one.
Magnificent by Scott Borthwick, who completes his second hundred of the match in the penultimate over of play. This one has taken him 160 balls, with 10 fours, and Durham are 318 in front.
After a last-wicket stand of 34, Samit Patel (4-71) dismisses Warwickshire number 11 Chris Wright for 20, leaving Chris Woakes 20 not out and Nottinghamshire facing a victory target of 227 - with eight overs left in the day.
The visitors lost six wickets after tea and Luke Fletcher finishes with 4-25, and match figures of 7-95, a fine return to the side by the seam bowler.
Michael Richardson goes after sharing a partnership of 66 with Scott Borthwick that has taken Durham's lead past 300. Paul Collingwood comes to the crease and the only question left now is will Borthwick reach his second century of the game before the close? He's 89 not out.
BBC Wales' Nick Webb:
"A clatter of wickets since tea has seen the game swing Glamorgan's way as Gloucestershire failed to maintain their steady afternoon progress.
"Michael Hogan, with four wickets, has been Glamorgan's principal weapon, with home skipper Gareth Roderick one of his victims after a painstaking 67.
"Murky conditions in Bristol and a gloomy weather forecast are further complications for the captains to consider."
- Copyright: Rex Features
Liam Plunkett bludgeons Tim Groenewald straight for four, but it's his one and only scoring stroke. If the weather is kind to Somerset, the defending champions could be in for a very uncomfortable final day tomorrow.
In his new role as opening bowler, England spinner Monty Panesar makes the breakthrough for Northants as Kent's New Zealand opener is sent on his way after an opening stand of 54. Daniel Bell-Drummond is looking well-set at the other end as he is joined by first-innings double-centurion Joe Denly.
- Copyright: Rex Features
There are more than 20 overs to go at Taunton, light permitting, and Yorkshire are in trouble after losing two wickets in successive overs - Jack Leaning caught behind for 17 and Lewis Gregory and Adil Rashid run out for nought attempting a third.
Liam Plunkett has joined Gary Ballance, who is unbeaten on 37.
There's a long way to go yet, Kate....