I tried playing Pat with a 38mm ball today, and had a hard time keeping it on the table. The ITTF only supports the use of the 40mm now, which is the only size the club uses, so I wasn’t used to the lightness of the 38. Basically I had to play conservatively the entire time, which is fairly frustrating when the best part of my game is smashing and counter-driving. After an hour, sweat started to sting my eyes, and I had a hard time keeping track of the ball. On a good note, my backhand loop is getting much better, even though fatigue has a heavy affect on the consistency.