Hi wat is the nutrition/diet of a profession rugby player like compared to a amateur?

It all depends on how seriously the amateur player takes their nutrition , Some amateur players will look after what they eat to ensure that they get all the right nutrients to help them peak physically . Professional players will have Nutritionists , Strength Coachs and Conditioning coaches which will look at what the player needs to help him personally develop in the ways in which he needs to,

high amounts of every aspect of your diet then 2 days befor a match pasta based meals (carboloading) in exess of 10000 Kcal,

with a profestional forward rugby players they eat 10,000 calories and backs eat 7,000 they eat aroun 8 small and big meals a day but they can eat all this as they work it off in traing !