Australia coach Justin Langer praised Pakistan's "fantastic" Haider Ali after the teenager marked his international debut with a sparkling fifty against England. <p></p> <p></p>The 19-year-old made 54, becoming the first Pakistan batsman to score a half-century in his first Twenty20 international as the tourists beat England by five runs in a last-ball thriller in Manchester on Tuesday. <p></p> <p></p>Haider came in with Pakistan 2-1 after the loss of Fakhar Zaman at Old Trafford yet struck his second ball in international cricket, from off-spinner Moeen Ali, for a soaring six. <p></p> <p></p>"He's fantastic," said Langer in a conference call on Wednesday (September 2) from Southampton, where Australia begin a three-match Twenty20 series of their own against England later this week. <p></p> <p></p>"Pakistan as we've always known, they are like a sleeping giant. They've got so much talent, it's like India, it's exciting to watch." <p></p> <p></p>Pakistan's tour-ending victory meant the three-match T20 series finished all square at 1-1, with one rain-marred no result. <p></p> <p></p>The game was also notable for a stand of exactly 100 between Haider and 39-year-old veteran all-rounder Mohammad Hafeez, who made an unbeaten 86. <p></p> <p></p>Asked if he had ever been involved in a partnership featuring a similar age gap, former Australia opening batsman Langer replied: "My experience of that was with Shaun Marsh. <p></p> <p></p>"I've known him since he was born. Geoff Marsh (Shaun's father) and Michelle, they are great friends of mine. Geoff was my first captain. <p></p> <p></p>"We played together when he was 17 or 18 for Western Australia. I understand that experience for the Pakistanis last night. It's great to see these young kids come in and play. <p></p> <p></p>"He (Haider) hit a six off his second ball in international cricket -- it's exciting to watch."