One of tennis's most respected strategists is imploring Alex de Minaur to tweak his flat forehand in order to take the next grand slam step.
Texas-based Australian coach and analyst Craig O'Shannessy, who helped Novak Djokovic emerge from his mid-career funk and capture four grand slam crowns, doubts de Minaur can win majors unless he turns his forehand vulnerability into a strength.
In becoming the first Australian since Lleyton Hewitt 20 years ago to reach three consecutive grand slam quarter-finals, all on different surfaces, de Minaur has proven he has the all-round game to go deep at the majors.
