HARARE (Reuters) – Former England batsman Gary Ballance contributed 30 runs on his international debut for Zimbabwe as they beat Ireland by five wickets on Thursday to win the opening Twenty20 international of their three-match series. Ballance’s runs came off 29 balls as Zimbabwe scored 118-5 as they initially made heavy weather of chasing down Ireland’s modest total of 114 all out but in the end won with two overs to spare at the Harare Sports Club. The 33-year-old left-handed batter last month signed a two-year contract to play domestic and international cricket in the country of his birth …