Glamorgan 294 for 7 (Ingram 95*, Lloyd 65, Bragg 52) beat Kent 290 for 3 (Billings 106*, Denly 104) by three wickets
Unbeaten centuries from Kent's Sam Billings and Joe Denly counted for nothing as Colin Ingram's ice-cool unbeaten 95 steered Glamorgan to a thrilling three-wicket win over Kent in a rain-affected Royal London One-Day Cup south group clash in Canterbury.
In a game reduced to 42 overs per side following the loss of 90 minutes to drizzle mid-way through Kent's innings, Ingram proved the immovable bedrock of the Welsh reply, hitting four fours and six sixes to clinch victory with seven balls to spare.
Chasing a revised target of 293 from their 42 overs, Glamorgan openers Jacques Rudolph and David Lloyd took a sensible and pragmatic approach as they pursued at an asking rate of almost seven-an-over.
With the floodlights on in relative gloom, the pair played themselves in before pressing the run-rate accelerator toward the end of their nine-over powerplay.
Lloyd, the right-hander with an unfeasibly wide stance, was quick to straight-drive Matt Coles, then pulled viciously for another boundary when the Kent paceman dropped short.
Rudolph (24) was caught on the sweep at deep square leg from James Tredwell's second delivery of the day to make it 63 for 1and Tredwell should also have removed Will Bragg without scoring, only for Billings to miss a sharp stumping chance.
Lloyd moved to a 48-ball 50 with a pulled four off David Griffiths and Bragg upped the tempo further with a 56-ball half-century with five fours and a six.
The pair added 86 before Lloyd (65), in attempting a flat-bat pull against Coles picked out Latham at square leg then, two balls later Bragg (52) was caught at mid-wicket when attempting a reverse lap against Tredwell.
Tredwell took a third wicket having Aneurin Donald (9) caught at long-off but Glamorgan's fifth-wicket partners Ingram and Chris Cooke combined to rekindle the run chase and, with 10 overs required, had reduced their victory target to 86 runs.
Ingram, the elegant left-hander, continued to show consummate timing in reaching a 30-ball 50 with three sixes but, with 55 needed Cooke (21) needlessly heaved across the line to be bowled by Coles then, with the target reduced to 36, Graham Wagg (8) was run out by Coles's under-arm shy to the non-striker's end after Ingram demanded a single.
With three overs remaining Craig Meschede (8) ran himself out attempting two to deep cover, but Griffiths's over ended with Ingram clubbing four over point and a six into the building site.
In the penultimate over, Ingram steered another brace of boundaries to third man leaving Timm van der Gugten to win it.
Batting first on a slow pitch that had had the sting taken out of it by Saturday's thunderstorms, Kent's openers Tom Latham (9) and Daniel Bell-Drummond posted a half-century first-wicket stand, only for both to fall in quick succession
Latham flicked lazily off Wagg to be caught at long leg then Bell-Drummond nicked to the keeper after Michael Hogan got one to seam away using the Canterbury slope.
Denly might have joined them back in the hutch when, with his score on 11, he sliced to point where Dean Cosker downed a tough overhead chance.
Sam Northeast (26) pulled a length-ball from Van der Gugten straight into the hands of deep mid-wicket just before Denly posted a 64-ball 50 with four fours and a six.
Rain arrived just before 1pm, leading to the loss of eight overs, forcing Kent to up their tempo after the 2.30pm re-start.
Billings also enjoyed a let off when, on 27, Hogan dropped a skier at mid-off off the bowling off Meschede and took advantage by scampering to a 36-ball 50 with a six off Cosker that flew onto the Kent players' balcony.
The milestones continued when Denly moved to the fifth List A hundred of his career with eight fours and a brace of sixes.
Billings continued to show why the Delhi Daredevils invested in his services in the 2016 IPL with a stunning display of clean, inventive hitting. His 53-ball 100 came with a the biggest six of the day off Hogan and took just over an hour.
The pair went on to add 170 off 92 deliveries coasting past Kent's previous List A fourth-wicket record against Glamorgan of 146 set by Alan Ealham and Chris Tavare at Swansea in 1980 as the hosts scored at 14 an over from the final five overs. In the end though, it all proved to no avail.