Hand size absolutely matters, and anyone below 9" better be superman (Romo being the exception - sorta ). 9"-9 1/2" is definitely smaller than ideal, and it's a knock, but it's not a death knell. Big hands help you control the ball better. Grab a football; now, imagine if your hand was bigger. It's not a hard concept. It's an asset, just like quickness is an asset, accuracy is an asset, arm strength is an asset, etc. People take a highly personalized approach when assessing these assets. I expect Goff to fall out of the top 5 with his 9" hands. I'll say that much.