It wasn't merely the fact Bangladesh completed the second-highest run chase in World Cup history but the yawning ease with which they did it.
Of course, nothing seems impossible in cricket any more but there was something truly jaw-dropping in the way Bangladesh, inspired by the magnificent Shakib Al Hasan, chased down 322 with 8.3 overs to spare to pulverise the West Indies' semi-final ambitions.
This World Cup had lacked a thrilling run chase but this half-way house fixture in the group stage - one billed as a must-win for both sides - compensated for that. And then some.
Andre Russell appears dejected after during West Indies group stage defeat to Bangladesh
Shakib Al Hasan of Bangladesh celebrates hitting a century with Liton Das at Taunton
Al Hasan hit 124 not-out as Bangladesh easily chased down a target of 322 set by the Windies
Al Hasan was player of the match but Bangladesh were helped by a hopeless fielding display
The Windies hit 25 wides alone while it was difficult to count their misfields and overthrows
Only Ireland's famous chase of 328 to stun England at Bengaluru in 2011 topped the total Bangladesh effortlessly chased down here at Taunton.
Shakib must rank among the most under-appreciated players in world cricket but he well and truly underlined his world class status here, hitting an innings of 124 off 99 balls that will go straight to the all-time World Cup highlights reel and Bangladeshi legend.
While nobody expects Bangladesh to make the semi-finals, this win does keep them in touch with the top four. But we can effectively wave goodbye to the West Indies and, on this evidence, good riddance.
Though two of their fireworks in Chris Gayle and Andre Russell failed to ignite, their score of 321 for eight, anchored by Shai Hope's 96 and 70 from Evin Lewis, still looked more than competitive.
But they chucked it all away with a fielding performance that was torturous to watch. They gifted Bangladesh 25 runs in wides alone with their erratic bowling. There were so many misfields and overthrows you lost count.
The short ball Plan A that worked so well in their tournament opener against Pakistan simply hasn't worked since. There didn't appear to be a Plan B.
And, perhaps worse of all, their thoroughly disinterested body language even midway through Bangladesh's reply was that of a team waving a giant white flag.
To the disappointment of those Somerset locals who recalled Gayle clearing the stands here in the Twenty20 summer of 2016, the West Indies' star turn fell early.
Gayle had failed to even get off the mark from 13 balls when he prodded at Mohammad Saifuddin and edged for wicketkeeper Mushfiqur Rahim to take a sharp low catch.
Bangladesh's Tamim Iqbal takes the catch to dismiss West Indies' Shimron Hetmyer
Chris Gayle (C) failed to fire for the Windies and was dismissed for nothing from 13 balls
It was left for Lewis and Hope to rebuild from that early setback and they proceeded to do so, albeit at a most un-West Indian pace.
Indeed, the 32 runs they crawled to after 10 overs was the lowest opening Powerplay total of the World Cup thus far.
It took 63 balls for the first shot to clear the ropes, but the relatively conservative West Indian approach did at least provide a stability to their batting missing against England last Friday.
Lewis, who has struggled desperately in this tournament so far, would have been thrilled with a half-century and he worked studiously in ones and twos with Hope to bring about the first West Indian century partnership of the World Cup.
They were just starting to ramp things up when Lewis tried to
