Reply to Got Soccer vs Youth Soccer Rankings

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[quote=Anonymous][quote=Anonymous]It's not even worth more than 5 second debate:

gotsoccer only does gotsoccer events.

YSR combines gotsoccer and total global sports (TGS). As an example, ECNL clubs only use TGS, so gotsoccer will show only ECNL clubs with gotsoccer tournaments.

YSR is as close as we'll get to a ranking system worth your time, if at all.  TopDrawerSoccer has rankings based on human eye-test and they likely look at GS or YSR, but it's not fully known.[/quote]

The difference in favor of youth soccer is actually greater than this.

1.  Even worse than the missing games is gotsoccer's ranking algorithm.  It awards points for winning or placing in tournaments and leagues, arbitrarily assigning different point values to different tournaments.  It does not take account of the opponents, nor the scores.  So gotsoccer awards the same number of points to a team which enters twenty tournaments and wins two of them, compiling a record of 16-44-30 along the way, and a team which enters two tournments and wins them both with a record of 10-0-0.

Youth soccer is a handicap system where each match played can move your ranking up or down based on the strength of the team you face and the margin of victory.  For example if a team with a ranking of 40 plays a team with a ranking of 34, the expected margin of victory would be 6 goals.  If the higher ranked team won by only 2-0, its ranking would be reduced.  This ensures that a team cannot simply raise its ranking by playing more ranked games (or even just by focusing on weaker opposition) and counting points for the wins and ignoring the losses.

In other words got soccer approximates (this is not strictly true - but it's close enough to give you a sense of the fatal flaw) a team with a record of 20-0-0 the same as one with a record of 20-40-0, while YSR sees 20-0-0 the same as 10-0-0 and 20-40-0 the same as 2-4-0.

2.  Youth soccer not only captues more results automatically than gotsoccer (GS and TGS) but also has a mechanism for anyone to notify the web-site of missing results from any competition which has results posted on the web, and to fix common errors such as multiple names for the same team.  So YSR captures far more results than GS.

Even YSR is not perfect as it is difficult for any ranking system to correctly rank different pools of teams which rarely play matches between the pools - for example it used to struggle with ranking DA teams vs non-DA teams because there were so few matches between the two different groups.  It is also not clear to me that their ranking algorithm reflects reality - is goal difference really an additive function?  In other words if team A is 3 goals better than team B, and team B is 3 goals better than team C, does that really imply that A is 6 goals better than C?  But it's surely closer to reality than gotsoccer's nonsense.

TopDrawerSoccer appears to pull names out of a hat.[/quote]

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