It was hard to believe when it happened, and it's hard to believe now. In 2011, Ireland beat England at the Cricket World Cup.
And if you don't remember, this wasn't a win on a bad pitch that brought us back to the back, or a win that came as a result of some lucky nicks and dodgy wickets, this was Ireland going out and smashing England off the park.
In fact, England's batsmen, which included Ireland's Eoin Morgan, had left us a total to chase so high, it had never been done before at the World Cup. A few hours later, queue pandemonium both in India and at home.
The day ended with Trent Johnston and John Mooney getting the final runs needed to get over the line, but the hero of the day was Kevin O'Brien, the Dubliner who smashed the quickest 100 in World Cup history, and overcame odds that at one stage had Ireland at 400/1 during the game.
On the anniversary of the achievement, the International Cricket Council have made a supercut of O'Brien's century on what was the most famous day in Irish cricket history.
100 runs off just 50 balls! ?#OnThisDay in 2011, @KevinOBrien113 blasted the fastest ever @cricketworldcup century as Ireland recorded the biggest successful chase in the tournament's history in a famous win against England! pic.twitter.com/EyADIj3jdx
— ICC (@ICC) March 2, 2018