August 6, 2021, will forever hold a special place in Bangladesh’s cricketing history. On this day, the Tigers defeated Australia by 10 runs in the third T20I at the Sher-e-Bangla National Cricket Stadium in Mirpur to take an unassailable 3-0 lead in the five-match series, sealing their first-ever bilateral series victory against Australia in any format.

The triumph was far more significant than simply winning a T20I series. Australia had long been one of world cricket’s most dominant teams, and Bangladesh had struggled against them across formats for decades. Having already secured their maiden T20I victory over the Australians in the opening match of the series, Bangladesh entered the third game with a golden opportunity to script history. They grabbed it with both hands, producing another disciplined all-round performance in front of an ecstatic home crowd.

After winning the toss, Bangladesh opted to bat first on another challenging Mirpur surface. Runs were difficult to come by as Australia’s bowlers made excellent use of the slow pitch. Captain Mahmudullah led from the front with a composed 52 off 53 deliveries, while Shakib Al Hasan chipped in with a brisk 26. Although Bangladesh managed only 127/9 in their allotted 20 overs, the total appeared competitive given the nature of the wicket. The innings also witnessed a remarkable feat from Australian debutant Nathan Ellis, who became the first bowler in men’s T20I history to claim a hat-trick on debut.

Despite Ellis’ memorable achievement, Bangladesh remained confident in their bowling attack. Their belief was justified almost immediately as the bowlers once again exploited the sluggish conditions brilliantly. Left-arm pacer Shoriful Islam struck twice, while the experienced spin duo of Shakib Al Hasan and Nasum Ahmed kept Australia’s batters under constant pressure through the middle overs. Every run had to be earned, and boundaries became increasingly difficult to find.

Mitchell Marsh fought valiantly for Australia with a patient half-century, scoring 51 from 47 balls to keep the chase alive. Ben McDermott also offered useful support, but Bangladesh’s bowlers consistently denied the visitors any sustained momentum. Entering the final over, Australia required 22 runs with wickets in hand. Off-spinner Mahedi Hasan held his nerve under immense pressure, conceding only 11 runs as Bangladesh restricted Australia to 117/4 to complete a famous 10-run victory.

The celebrations that followed reflected the magnitude of the achievement. Bangladesh had not only defeated Australia in consecutive matches but had also secured a historic bilateral series with two games still remaining. It marked the first time the Tigers had beaten Australia in a series across Tests, One-Day Internationals or T20 Internationals since the two nations first met on the international stage.

The victory was the result of a complete team effort throughout the series. Bangladesh’s spinners repeatedly choked Australia’s batting line-up on the slow Mirpur pitches, while the batters adapted intelligently to difficult conditions rather than chasing unrealistic totals. Captain Mahmudullah’s calm leadership, Shakib’s all-round brilliance, Mustafizur Rahman’s experience and the emergence of youngsters like Shoriful Islam and Mahedi Hasan combined to produce one of the finest moments in Bangladesh cricket history.

Although Australia eventually avoided a series whitewash by winning the final two matches, the trophy had already been decided. Bangladesh’s triumph served as a powerful statement ahead of the 2021 ICC Men’s T20 World Cup, proving that they could compete with and defeat one of cricket’s traditional powerhouses.

Five years on, Bangladesh’s historic series win over Australia remains one of the defining achievements in the country’s cricketing journey. It was a victory built on discipline, resilience and belief—qualities that transformed a talented side into history-makers. On this day in 2021, Bangladesh didn’t just win a cricket series; they rewrote a significant chapter in their sporting history.