Calendar Year Re-Alignment
When the new soccer year starts on August 1st, 2016 all youth soccer teams have to adjust their squads to align with a single calendar year. This site has decided to retain the game history from previous seasons so tournament organizers can continue to flight their competitions. It will take a few months for the rankings to accurately reflect the true quality of the new teams. It will be interesting to see which teams get stronger and which are weaker. The game history for a current 99/00 team will transfer to the new 2000 team because, on average, the 2000 team will pick up most of the 99/00 team's players.
A ranking systems' accuracy is measured by its "Predictive Power" (how often a higher ranked team beats a lower ranked team). A Predictive Power of 0% is equivalent to flipping a coin. 100% means the rankings always predict the result of a game (impossible given the random nature of the sport). Some ranking systems only rank the top 25 teams in each age group. That is not helpful if you are trying to flight a tournament. "Coverage" is the fraction of all games where both teams are ranked by the ranking system. Here is how the online ranking systems compare today:
This site ranks 133,000 youth soccer teams in the USA based upon the results of 1.1 million games in the last 18 months. The results come directly from more than 350 different tournament or league websites and are the most accurate and complete set used by any ranking system. The rankings are based solely on team results. Every goal in every game is considered when calculating the ranking of each team. Each team is assigned a score that is measured in goals. To predict the goal difference when two teams play each other simply subtract the score of one team from the score of the other. For example, if Denver Rovers (35.6) plays Parker Stars (33.5) then you can expect Denver Rovers to win by about 2 goals. This works across age groups and even when girls play boys!
The rankings are recalculated almost every day, so please check back often. Teams are only listed if they have played 10 games. Sometimes games are split between duplicate teams. I try to fix as many of those as possible. If you spot anything that looks wrong please drill into the team details and click "Report Errors" (at the top right of the screen).
If your team is missing you can view unranked teams here.
I still need to load results from the following sites: www.illowa.org, www.bays.org, www.mnyouthsoccer.org, lijsoccer.com.
Let me know if you spot anything else!