A stop clock controls Jyothi Yarraji’s destiny. Its ticking – on an excruciatingly hot April morning in a quiet corner of Navi Mumbai – is the only constant soundtrack that plays on loop. There are no competitors here – just Jyothi versus the clock. The first Indian hurdler to qualify for the Olympics in 100m hurdles and her coach James Hillier are driven by a solitary pursuit: shredding microseconds. Or, 0.28 seconds, to be precise. “Her personal best is 12.78 seconds. I want to get her to 12.5,” Hillier says.…