As a Stan supporter, I am quite interested what changes he could do to improve on Grass. Last year, he was a Quarterfinalist on Wimbledon, being the first to take the first Set against the then unbreakable Federer at the time, just losing close in the next 3 Sets. Some say his problem is mostly on return and his preparation on his shots (too much windup) but I wonder what other holes he had that needs to be fixed. I think he could be flexible in faster surfaces (he did win Rotterdam against Muller, Raonic and Berdych) and he actually did well against Kyrgios in Queen's on return (I just think his reaction time was hindered a bit against Anderson with the pressure of trying to beat someone who beat him 3 times straight). His first serve if high is going to be a potent and important factor on the following matches so I wonder what he could do to follow it up.