The ball sport where boasting is the part of the game is in squash. Boasting can refer to an offensive or defensive move in the sport.
Squash
To boast. "boasting" is conjugation of the verb - "Stop boasting, it does you no favour".
Yes, boasting has an a in it, no matter who is doing the boasting about whom.
Yes, full-Samoan or part-Samoan.
Taking part.
as he is accredited with starting the rugby concept then he took part. However it was not until 1870 that the game of Rugby Union was formalised and he would not have been of an age to take part
Boasting
Rugby was introduced to New Zealand by Charles Monro in the late 1860s having been in University in England where he studied and took part in the initial "rugby" style game
The game of rugby (in both codes) is now word wide with 0ver 90 countries taking part in the game
No The All Blacks are the New Zealand Rugby Union National Squad. NRL is National Rugby League
You will need to be part of the squad or part of the development process through their academy