Some acronyms for U.S. Pro Soccer would include the USSF which stands for the United States Soccer Federation and there are also three professional soccer league divisions under the United States Soccer Federation. Division I, the strongest and highest division, is made up of teams from MLS or Major League Soccer. Division II is made up of teams from the NASL or the North American Soccer League. Division III, the weakest and lowest division, is made up of teams from the USL Pro, or United Soccer Leagues Professional Division.
F.I.F.A
The top flight is MLS, Major League Soccer.
By pro I guess you mean MLS which is the first tier of American soccer, in that case it's 15 teams.
David Beckham
pro soccer players
There isn't really one acronym of soccer. There are multiple. For example, MLS means Major League Soccer. There are many more acronyms for soccer, but I know only one.
You can be as young as 15 to join a pro soccer team
Pro Evolution Soccer Management happened in 2006.
Marcel Desailly Pro Soccer happened in 2004.
International Superstar Soccer Pro happened in 1997.
AWS Pro Moves Soccer was created in 1993.
AWS Pro Moves Soccer happened in 1993.