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MYHockey Frequently Asked Questions (FAQ)
- Why are you doing this?
- How does MYHockey compute its ratings?
- Are some teams or leagues given preferential treatment?
- How accurate can this be?
- We beat Team X twice, how can they still be ranked ahead of us?
- We won both our games this past weekend and our rating went down, how is this?
- What does a team's overall rating number mean?
- What does each of the columns on the ratings page mean?
- Why are some teams not in the rankings?
- Why are some game scores missing and team records inaccurate?
- Which teams and leagues are being ranked?
- A game score is incorrect, how do I get it corrected?
- There are missing or duplicate game scores, how do I correct them?
- My local association information is incomplete or inaccurate, how do I get it corrected?
- Can my league use this information?
- How can my league help?
- How can my team help?
- How can I help?
- How is it that MYHockey is free?
Last updated on 3 Jan 2008.
1. Why are you doing this?
MYHockey was developed to share the love of youth hockey with others. It started
as a project to share links to other associations and leagues with others. It progressed
to teams as my son's team sought competition outside our immediate geographical area. When we started
looking at teams, we began to look at records to see if another team might be good competition for
my son's team. We quickly realized that a team's record was not an indicator of strength and then
we started to wonder who (which team) was really better and by how much.
As our team pursued a search for good competition, we made some mistakes that left both us and
our opponents less than satisfied after a weekend of blowouts. Was there any way to objectively
understand the relative competitive level of another team? Maybe... Let's
try something... Hey, this is pretty cool... We should share with others...
2. How does MYHockey compute its ratings?
MYHockey's ratings are computed mathematically, with no subjective weighting
or human determined values. MYHockey rates teams based upon how well they play against other teams and
how good those teams are. These two factors are "AGD" or "average goal
differential" and "SCHED" or "strength of schedule". AGD is currently
calculated by accumulating the goal differential of each game, to a
maximum of 8, and divides it by the number of games played. Using a max
game goal differential of 8 does "penalize" teams that blow out opponents,
but this is common in rating systems and discourages running up scores.
The strength of schedule is computed by averaging the rating of each game
opponent. AGD and SCHED are added together to compute a team's rating.
3. Are some teams or leagues given preferential treatment?
There is no preferential treatment for teams from certain leagues. All teams are
assumed to be equal and having a rating of zero before the system mathematically
calculates your SCHED and AGD based entirely upon game performance. A team's
SCHED is not only determined by the teams it plays, but by the teams its
opponents play and its opponents' opponents play, etc. This is why a struggling AAA
team will likely be ranked above average AA teams.
4. How accurate can this be?
If a group of teams (i.e. a league) doesn't play others outside its group, their placement
relative to all other teams cannot be accurately be determined, but relative
to one another it is accurate. Groups of teams
with limited outside play can be inaccurately skewed by the scores of only
a few games, which might not be representative of the group's overall ability. Accuracy
significantly increases with more games and more interplay and it makes sense for there
to be a minimum number of games before teams are ranked.
Assuming teams have all played enough games against both league and non-league
teams, inaccuracies may still exist. Some teams play differently (a lot differently)
depending upon which goalie is in net for a specific game. In this case, the ratings
average out the play and may not completely reflect either scenario. Missing players,
home vs. away, double rostered players are a few other scenarios that could influence the
accuracy of the ratings. It's not an exact science. The ratings should be used to
determine what teams might be good non-league opponents and which bracket of a tournament
may be more appropriate, they are not meant to be the AP Poll for youth hockey.
There are a couple weaknesses to the current system. The first deficiency is with
teams that emphasize development in some games. They are "penalized". That same team
may then focus on winning big tournaments and succeed, but may never achieve the
rating that they "deserve". Secondly, teams that "come on" in the second half of the season
are "penalized" by early poor performances. All games throughout the season count
equally and that may not reflect a teams performance near the end of the season.
5. We beat Team X twice, how can they still be ranked ahead of us?
Yes, it seems wrong, but a team that you have a winning record against can be ranked ahead
of you. It's all in mathematics. It depends on who else your team has played and how well
you did as well as who the other team has played and how well they did. In a season of
games, there will be some anomalies.
6. We won both our games this past weekend and our rating went down, how is this?
Your rating can go down even though your team wins. This can happen for a couple different reasons.
First, if your team is rated 3.0 points (1 point = 1 goal) better than your opponent and you win two
close games by 1 goal each, your average goal differential (AGD) is +1.0
against a team that it was expected to be +3.0. This would likely have a negative impact on your rating.
Another scenario has you doing as expected against your opponent, but a large percentage of the teams
you played earlier in the season doing unexpectedly bad. This lowers your strength of schedule and would
lower your team's rating. It is almost impossible to guess how much and in what direction your rating
will move each week because of the complexity of the math.
Two additional notes. During the entire season, new team continue to be added to the system. Teams
rated in the middle of the pack in October may fall 100 spots by the end of the season while improving,
simply because the number of teams added to MYHockey increases over time. It might be best to compare
your team to others in your league or geographic area and see if your rating improves relative to theirs.
Also, MYHocke now has available a page that explains the mathematics behind the rating. From either the
scores page for a particular team or from the team information page, you can find a link to the math
page by clicking on the graphic.
7. What does a team's overall rating number mean?
Everything is relative. The number specifically means nothing, but might be
used to understand the relative competitiveness of two different teams. A 1.0 point differential
equates to a theoretical goal 1.0 goal advantage by the team with the higher point value.
Squirts, Peewees and Bantams are all calculated separately. While a Peewee Minor AAA team
can get a pretty good sense on how good they would fair against a Peewee Major AA team because
all Peewee ratings are calculated relative to one another, one cannot compare a Squirt Major AAA
team to a Peewee Minor AA team in the same fashion. MYHockey has some limitations and figuring
the relative difference between stronger squirt teams and weaker peewee teams is one of them.
8. What does each of the columns on the ratings page mean?
"Record" is represented by wins-loses-ties. As described above, the "Rating" is simply the sum
of the "AGD" and "SCHED". "AGD" is average goal differential. This can be a
positive or negative number that equals goals for (GF) minus goals against (GA) divided
by games played (GP). One caveat, the system currently has a maximum goal differential of eight
for any single game played. This means that if a team plays a number of games decided by
more than eight goals, it's not quite as simple as GF-GA/GP. "SCHED" is the average strength of
schedule of all opponents. Fundamentally you can add the "RATING" for all opponents and divide
by GP. "Details" will give you more information about the team while "Scores" is a link to
a team's complete set of season game scores as recorded in MYHockey.
A couple hints to give you the full power of MYHockey. Any teams with known team websites will
be represented by underline/hotlinked team names. Clicking on the team name will open an
additional window to this team's web site. When viewing scores, each opponent's schedule is
just a click away. For example, if you are viewing the game scores of Team X and they played
Team Y, you can view Team Y's game scores by simply clicking on Team Y's name.
9. Why are some teams not in the rankings?
Teams are displayed on the rankings only after having played at least five
games against others teams in the system. Games not recorded via publically
accessible team, league and
tournament web sites are unlikely to be recorded (there is no magic here).
MYHockey has now expandeded to include almost all competitive youth hockey in the US and
Ontario where birth year age level are used. Some geographic areas are not yet aware of
MYHockey and may not be volunteering to keep information updated, but every attempt is being
made to include all Tier I and virtually all competitive Tier II hockey. Feel free to
contact MYHockey if you feel certain areas are underserved.
10. Why are some game scores missing and team records inaccurate?
Missing scores are typically not in the system for one of a few different reasons. First,
only AAA, AA (or equivalent level) and AA/A minor games are being tracked. When minor
birth year teams play less competitive mixed birth year teams (i.e. teams not found in MYHockey),
those games will not be entered into MYHockey.
Second, games scores found on league and team web sites are the primary source of
MYHockey volunteers and if the game score isn't located on a web site where someone
is looking, it won't get entered into the system. Third, game scores against
ambiguous teams (i.e. "Flames" or "Chicago Blues" or "Columbus") don't
identify the exact opponent and will not get recorded unless the exact team can be
identified. Spell out team names more clearly so there is no question in the mind of our
volunteers. Lastly, some scores aren't entered or entered in a timely fashion because
there is no volunteer covering their league/division. Please consider volunteering. To
find out more, go to the Report Scores Page.
11. Which teams and leagues are being ranked?
In 2007-08, MYHockey has expanded tremendously. The 2006-07 season saw only US Bantam, Peewee
and Squirt teams playing Tier 1 or
competitive Tier 2 levels included. In addition, Ontario AAA (and Ottawa area AA - where there is
technically no AAA hockey) was also covered by MYHockey. The 2007-08 season has seen MYHockey
expand from its 2006-07 base to include Midget Hockey in the US & Canada. Also, most birth years
of Ontario AA hockey are also now covered and all will be covered if interested volunteers come forward.
MYHockey has expanded into Minnesota with the release of the
MNHockeyRankings.com web site. This site is integrated with
MYHockey and game scores can now be entered when mainstream MYHockey teams visit Minnesota. Western Canada
Bantam AAA hockey (AA Tier 1 in Sask) is also now available. Additional areas are possible/likely.
More information on leagues and associations can be found in those sections of the web site.
12. A game score is incorrect, how do I get it corrected?
Sometimes mistakes happen. It may be on our side, or it might have come from a team or league web
site. Too many humans involved... If reasonable, work to get the score corrected on its posted site first.
Then, please send any corrections to
scores@myhockeyrankings.com. Documentation
verifying the correction makes things easier.
13. There are missing or duplicate game scores, how do I correct them?
Again, mistakes are inevitable. If duplicate scores have been posted, feel free to immediately contact
us at scores@myhockeyrankings.com to get things
corrected. We try to catch these ourselves, but we appreciate your help. If they are missing
game scores, give us a couple weeks and make sure they are posted on the web first. If they are on
the web and we aren't updating the web site, please send the web site listing the games scores to
scores@myhockeyrankings.com.
14. My local association information is incomplete or inaccurate, how do I get it corrected?
My apologies, especially if we've simply mis-keyed something in at MYHockey. Typically, info on
MYHockey is incorrect because it's incorrect on the association web site, or worse yet, there is
no association web site to refer to. My first hope, in these cases, is that the real source of
info gets updated. Then, by all means, send any corrections to our director at
director@myhockeyrankings.com.
15. Can my league use this information?
Absolutely. MYHockey has actually helped leagues who have pre-season schedules to help determine who plays
in which division during the regular season. This service is available to others as well.
Please send an email to director at
director@myhockeyrankings.com.
16. How can my league help?
Accurately post all league scores! The number one thing a league can do is post, on the internet
in a timely fashion, all league game scores. Encouraging associations/teams to create team web sites and
make non-league game scores available to the public would also help.
17. How can my team help?
Create a team web site and list all game scores in an area where our volunteers can easily find it. Also,
please clearly identify your opponents. Ambiguity means we cannot post the
results, even if you have them on your web site.
18. How can I help?
Volunteer. Keep us honest. Report tournament results (frequently, it's hard to find complete, accurate and unambigious
tournament results). Encourage others to do the same. Please visit the Report Scores Page
where additional information on volunteering with MYHockey can be found.
19. How is it that MYHockey is free?
MYHockey is free just as Google is free. Advertising covers the cost of running the website. Volunteers, from the founder to
the quiet goalie's mom on your team, contribute countless hours with a common goal in mind. MYHockey's mission is
to provide you the best, most complete and accurate information about youth hockey.
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