Worcestershire were in a record-breaking rush as they beat Lancashire by seven wickets to keep alive their hopes of progressing in the Royal London One-Day Cup.
In going past the Lightning's total of 304-7 they surpassed their previous best run-chase in 50-over cricket, set in 2007 when overcoming Warwickshire's 303-6 in a Friends Provident Trophy match at New Road.
Skipper Daryl Mitchell (88) and Tom Fell (74) created an ideal platform in a second-wicket partnership of 137 in 27 overs and the game probably turned when Alexei Kervezee edged the first ball he faced between wicketkeeper and first slip.
The cost mounted as Kervezee charged on to an unbeaten 63 and saw his side through to a famous victory with 13 balls to spare after easily clearing off the 126 wanted from the last 15 overs.
While Kervezee timed the ball brilliantly, picking off eight fours from 49 deliveries, left hander Ross Whiteley brought out the hammer blows with three sixes and four fours in powering to 45 not out. Their partnership was worth 89 in 8.3 overs.
Worcestershire director of cricket Steve Rhodes said: "We are absolutely delighted.
"It's the first time we have pulled off our batting plan exactly as we wanted to. Ironically it's also the first time we have chased in this competition.
"A lot of hard work was done by Daryl Mitchell and Tom Fell originally and thankfully the finishers, Alexei Kervezee and Ross Whitely, completed a wonderful chase comfortably."
In conceding 300 runs or more for the third time in five group games - four of which they have lost - Lancashire simply lacked the depth of bowling to cope with Worcestershire's acceleration on a day of 609 runs.
Defeat was tough on the Red Rose batsmen after posting successive totals of 300 or more, the first of these in seeing off Derbyshire on Thursday.