RH meaning in Sports ?

Roller hockey is a form of hockey played on a dry surface using wheeled skates. It can be played with traditional roller skates (quad skates) or with inline skates and use either a ball or puck. Combined, roller hockey is played in nearly 60 countries worldwide.

There are three major variants of organized roller hockey. Traditional "roller hockey" (also called rink hockey, quad hockey, and hardball hockey) is played using quad skates, curved/'cane' sticks, and a ball; it is a limited-contact sport. "Inline hockey" is played using inline skates, ice hockey sticks, and a puck; it is a full-contact sport though body checks are not allowed. "Inline skater hockey" is a European version of inline hockey that uses a ball instead of a puck. Rink hockey and inline hockey are governed internationally by World Skate, while inline skater hockey is governed by International Inline Skater Hockey Federation. Most professional hockey games take place on an indoor or outdoor sport court (a type of plastic interlinking tiles used to create a skating surface). Otherwise, any dry surface can be used to host a game, typically a roller rink, macadam (asphalt), or cement.