Gilbert arenas wears 0, i don't know of any who wear "00"
Yes, a player can wear any number they choose, provided they are the only member of their team that has it and the number is clearly defined on their unifrom. It is a number normally used by goalkeepers only, but many of these choose (or are given) other numbers, so it opens up the opportunity for their teammates.
Johnny Clement was the only Steelers player to wear #00. He wore it from 1946-1948.
no nhl players do not wear 00 because it is not a valid number
Its a 2:00 minute penalty given to a player who attempts to draw a penalty by faking or elaborating what actually happened. For example falling when they were hardly touched.
No Yankee has ever worn uniform 00.