David Miller hammered the fastest-ever T20I hundred as South Africa plundered Bangladesh for 224/4 from their 20 overs at Potchefstroom in the second T20I.Miller smashed his ton off just 35 balls, hitting seven fours and nine maximums in the process.The previous best was by Richard Levi, when he smashed a 45-ball hundred against New Zealand in 2012. He hit 13 maximums that day to score 117.(Cricket South Africa Twitter Photo)Killer-Miller walked in when South Africa were 78/3 in the 10th over, right after a set AB de Villiers departed for a 15-ball 20. He provided an early chance to Bangladesh but was dropped at 0 by Mushfiqur Rahim and he made them pay badly. He started his innings slowly, playing a perfect foil to Hashim Amla, who was closing in on a hundred. But, he cut-loose in the 16th over, where he hit Rubel for a four and two sixes to race away to 42 from 20 balls.Amla then fell for a well-made 51-ball 85 and Miller upped the ante. He brought up his 50 from 23 balls with a four of Taskin Ahmed and then never looked back.The southpaw then hit five consecutive sixes in the 19th over off Mohammad Saifuddin to reach near the landmark. He went into the 20th over, needing 12 runs to complete a sensational century.WHAT AN INNINGS! @DavidMillerSA12 has just hit the fastest T20I century off just 35 balls! Congratulations! ??? #SAvBAN pic.twitter.com/kKJ1qxEVwK- ICC (@ICC) October 29, 2017He hit Rubel Hossain for two back to back boundaries and then whipped one wide of long-on for a brace before finally driving one wide of sweeper cover for a two and bringing up his century off just 35 balls.The 28-year-old seemed very happy and said it was a sweet feelingadvertisement”It was a special feeling. I just tried to watch the ball and back myself. It was scratchy at the start of my innings, towards the end it was sweet,” Miller said in a mid-innings interview.Before Miller, Levi and Faf Du Plessis had scored quick tons for South Africa in T20Is.He also became the fifth Protea batsman to reach 1000 T20I runs after De Villiers, JP Duminy, Amla and Faf du Plessis.Miller now has 1032 runs from 57 games, averaging 30.35.