<strong>Karachi, Dec 16: </strong>Pakistan's Mohammad Rizwan became the first batter to score 2,000 T20 runs in a single calendar year, during his team's third and final T20I against West Indies, here on Thursday. <p></p> <p></p>The wicketkeeper-batter smashed a quick-fire half-century (86 off 45) to achieve the feat. He had earlier surpassed West Indies Chris Gayle in the list of most T20 runs in a calendar year. <p></p> <p></p>Rizwan along with Babar Azam (79 off 53) put on a 158-run opening stand that set up Pakistan's win with seven deliveries and as many wickets to spare as they recorded their highest successful chase in T20Is. <p></p> <p></p>The attacking batsman ended the year with 2,036 runs, smashing 18 half-centuries and a century in T20 cricket this year. Of a total of 2,036 T20 runs, 1,326 were scored in T20Is, also the most by a cricketer in a calendar year. <p></p> <p></p>Meanwhile, Pakistan skipper Babar Azam also smashed a half-century and became the first player to achieve 20 scores of 50 or more in overall T20 cricket in a calendar year.