Lancashire and Somerset were forced to settle for a frustrating draw after a lunchtime thunderstorm brought a premature end to what had promised to be a fascinating final afternoon at Aigburth.
The rain saturated the Liverpool outfield and despite waiting until 4.15 to make a final inspection, umpires Neil Hartley and Nigel Llong had little option but to call off play on the final day with Somerset on 93-3.
In the morning session, the visitors made reasonable progress towards their target of 279, adding 71 runs to their overnight score for the loss of Marcus Trescothick and James Hildreth.
Trescothick, who was dropped by Paul Horton off Chapple when he had made 12 and also survived a huge appeal for a catch at the wicket off the same bowler shortly afterwards, was eventually trapped lbw by the Lancashire skipper on 27.
Hildreth made nine off 21 balls before he edged Kyle Hogg to slip, where Andrea Agathangelou marked his championship debut by taking a fine diving catch.
At that stage the game was tantalisingly poised but half an hour's torrential rain was enough to leave puddles on parts of the Liverpool outfield and end the entertainment for a good fourth-day crowd.
Both teams take six points from the game, an outcome which does little to ease Lancashire's relegation worries or boost Somerset's chances of catching Warwickshire, Nottinghamshire and Sussex at the top of the Division One table.
Ashwell Prince hit a brilliant ton to rescue relegation-threatened Lancashire on the third day of their County Championship clash with Somerset at Aigburth.
The experienced South African made a vital 129 runs, as Lancashire posted a second innings total of 242 having earlier in the day slumped to 50-6.
Prince faced 213 deliveries and struck 12 fours and, together with Kyle Hogg, put on 98 for the seventh wicket.
Hogg's innings lasted 105 balls and yielded 38 runs - helped along by half-a-dozen boundaries - and was one of only two home batsmen to pass 20.
Lancashire's top-three batsmen could only muster seven runs between them but thanks to Prince managed to build a healthy lead.
In reply, Somerset had reached 22-1 by stumps in their second innings and face a stern test on Saturday to secure victory.
With one day remaining, Somerset require another 257 runs for victory with nine wickets standing.
Simon Kerrigan claimed his 100th first-class wicket as Lancashire fought back strongly against Somerset on the second day of their LV= County Championship Division One match at Liverpool.
The 21-year-old spinner reached the landmark in his 31st game when he trapped Nick Compton lbw sweeping for 22.
Compton also had some reason to celebrate having become the first player to score 1000 championship runs this season when he reached 13.
By the close, though, the visitors had been bowled out for 149 in reply to Lancashire's first innings total of 185 on a day when rain once again interrupted play.
Kerrigan finished with 3-47 from 22 overs and he was given good support by Glen Chapple (3-38), Ajmal Shahzad (2-40) and Kyle Hogg (2-17), while James Hildreth top-scored for the visitors with 45.
Lancashire had resumed on 129-5 and managed to add another 56 runs to their total despite the best efforts of Alfonso Thomas (4-63).
Peter Trego starred with the ball as Somerset had the better of a rain-affected first day of their Division One match against Lancashire at Aigburth.
The 31-year-old all-rounder finished with figures of 4-34 from 18.2 overs as the champions struggled to 129-5 at the close.
On a day when 44 overs were lost to torrential mid-afternoon and evening showers, Lancashire were indebted to Ashwell Prince for holding their innings together after Trego had claimed the wickets of both Stephen Moore and Paul Horton in a 10-over opening spell which cost just 12 runs.
The South African batsman made 51 off 94 balls and shared a fluent third-wicket partnership of 79 with Karl Brown, whose 39 included seven boundaries.
However, Trego returned in the evening session to wreck Lancashire's limited recovery.
First he uprooted Brown's off-stump as the Lancashire number three played a rather loose drive and Trego completed his day's work by having Prince caught behind by Craig Kieswetter.
The two teams need to win this game for contrasting reasons. Seventh-placed Lancashire need the points to avoid following the example of Sussex and Nottinghamshire, who were both relegated in the seasons after they won the title, while Somerset lie third and still have a chance of winning the championship for the first time in their history.