Tamim knew it was coming. So did his coach Chandika Hathurrusingha. And that is why the left-handed opener rolled his fingers over his head as a mark of respect towards the dugout after those celebratory punches in the air moments after becoming the first Bangladesh batsman to score a T20I century. Do not forget, he has also become Bangladesh's first batsman to score 1000 runs in the shortest version of the game.