Well i only use World Tour Movement and still don’t use sprint button and i can’t beat Hard difficulty yet with men or women’s matches. I went back to AO2 yesterday to test AI and i could beat the cpu on Grand Slam difficulty which is the highest. So Hard on Tiebreak for me is a lot harder than Grand Slam on AO2. I would like to see videos of how you still win easily because if you don’t sprint you simply cannot get to some balls quick enough,if i move the wrong way it is hard to change direction now as cpu wrong foots me,again i use World Tour Movement with no sprinting. Even the cpu on Medium now will probably be too hard for casual players. i can win a lot of points sometimes easily but still get beaten 6-2 6-3 most of the time but i am getting better.