Each team is allowed 15 players on the field at a time - this includes 8 forwards which include 2 props, a loose and a tight head, a hooker, 2 second rowers, 2 flankers and a no.8 there are also 7 backs which include a scrum half and a flyhalf, 2 wingers, and inside centre and an outside centre and a fullback. there is also allowed to be up to 7 reserves on the bench.
It depends, what sort of Rugby do you mean? League or Union?
The first player ever to do this was welsh ledgend Jonhathon Davies.
Steve Morris - rugby union player - died on 1965-05-29.
Ryan McCarthy - rugby union player - was born on 1979-01-21.
Jaco Fourie - rugby union player - was born on 1988-04-19.
Steve Morris - rugby union player - was born on 1896-09-01.
Malcolm Thomas - rugby union player - was born on 1929-04-25.
Wayne Stevens - rugby union player - was born on 1988-05-17.
Malcolm Thomas - rugby union player - died on 2012-04-09.
Lote Tuqiri - Japanese rugby union player - was born on 1987-11-12.
Much better than boring Union.
Depending on the code its either Rugby union which is the 15 player game or Rugby League which is the 113 player game