Kolkata, Nov. 29 -- If you thought six sixes in an over was the zenith of batting dominance, think again. Ruturaj Gaikwad has now raised the bar by hitting a record seven sixes against Uttar Pradesh slow-left arm bowler Shiva Singh-including one off a no-ball-in Ahmedabad on Monday and becoming the first batter in limited-overs cricket to score 43 runs in an over....