This was the most intensive stretch I've played with the P1 this summer. I'm trying to figure out if it's normal to have those types of days given my level of fitness (decent for a guy in mid 30's) and moderate fatigue. I usually play twice a week for a total of 6 hours. I upped it this past week to 9 hours and completely fell apart the last 2hrs with the exception of my serve. I could not get my normal topspin forehand anywhere in the court. I was either hitting it way long or in the net. I know on the over hits my footwork was bad. I know on the balls into the net my swings were bad. My technique is normally sound. Woke up today and the usual soreness is there, nothing special. Want to ascertain if this drop in play means: 1. I'm not in good enough shape to wield the Pro 1 as much and as long as I did. 2. Ergo 1, the racquet is too heavy for me. 3. A significant drop in play with any racquet will occur when fatigue reaches a certain level. Wish I would have packed a lighter racquet to see if that would have helped my play.