Sorry I disagree.. He will put on weight. I graduated HS 5'10" 160 grew 4 inches afterwards but didnt hit 180 til 30 now 205. I worked as a bicycle courier in college, ate 5 meals a day and a pint of Hagen Daz and couldnt put on weight. With today's training and diets Im sure if the Sabres can do it... but we have this same tired discussion everytime an 18 or 19 year old in the organization is skinny... whatever.