RACKET HELP PLEASE MY BAD EVERYONE hi guys. my 11 year old brother is playing real good with a head radical mp. sometimes i feel his balls go to slow as in he swings real fast but the ball doesnt feel heavy enough(to light imo). he has good stroke mechanism but i was reading sampras used a woody until he was 13 by his coach to have better swings. what can i take from that to help him, heavier and smaller racket if he can handle it? please im open to any advice, just want the best for him to improve thanks.