Every effort is made to provide accurate information on CFLdb Statistics. As a non-commercial experiment-in-progress, all issues are not treated with the same priority to correct. The following known issues are deemed minor, and exist on the site. Kind complaints over known issues will affect priority, which will determine when these issues are resolved. If you have discovered an issue not listed here, please report it so it may be corrected and/or listed here until resolved.
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Streak calculations handle team name changes when using the Club option, calculations do not when using the Team option. For equivalency to League records, use the Club option. To calculate streaks when teams merge, the continuity of league participation is used to determine streak. For example, the Hamilton Tigers moved to the ORFU in 1948-49 and the Hamilton Wildcats participated in the IRFU for those years, before the teams merged in 1950 to form the Tiger-Cats. The team that participated in the IRFU is used for streak calculations.
Resolution: Be aware of the continuity issues team mergers create when calculating streaks and using the Streak query tool. No fix is being considered for this issue, the problem lies with describing the correct process for calculating streaks in these circumstances, not calculating the streaks..
For comparison purposes, winning percentage is calculated consistently for all seasons using standard methods with a tie game counting as half a win. For seasons 2000-2002 where a point was awarded for an overtime loss, the percentage listed in these sections may differ from winning percentages displayed on season pages.
Resolution: There are no plans to include overtime losses in the calculations for the seasons when the awarding of an additional point was in effect. Be aware that all seasons are compared based on win-loss-tie record in a consistent manner.
First Downs — First Downs are calculated by CFLdb using the criteria defined in the CFL Rulebook. The process for calculations on CFLdb was reworked in October, 2018 to improve the accuracy of First Down stats and manual validation of most scenarios shows the correct values. However, some edge scenarios, specifically penalties, have not been validated, and there may be differences in how first downs are tallied based on interpretation of the scoring rules.
Resolution: No workaround to this issue is presently known (beyond manually calculating first downs yourself). While CFLdb is confident in the numbers in most scenarios, be aware there may be differences with the official numbers. CFLdb welcomes reports of discrepancies with official stats or manually calculated figures.
2nd Down Conversions — Calculated, experimental and not official. 2nd Down Conversions are defined as a 2nd down play that results in a first down, and is tracked by successful conversions and number of opportunities. There are no known issues with 2nd Down Conversion calculations, but as it has only been validated manually against a few games, there may exist edge cases which are calculated incorrectly (both positive and negative failures).
Resolution: No workaround to this issue is presently known (beyond manually calculating 2nd down conversions yourself). Volunteers to compute 2nd down conversions or compare against known 2nd down conversion values are welcome in order to identify errors or edge cases. Please reach out to CFLdb to confirm work required. All audit submissions, either to confirm accuracy or report errors, will be credited.
Two and Out — Calculated, experimental and not official. I am not aware of an official definition of two and out, and so use any series of downs that includes only one first down (excluding repeat of down on penalty) in which a team does not score a touchdown. This results in a kicking score in three downs or less at the end of a half counting as a two and out. Besides the definition, there are no known issues with Two and Out calculations, but as it has only been validated manually against a few games, there may exist edge cases which are calculated incorrectly (both positive and negative failures).
Resolution: No workaround to this issue is presently known (beyond manually calculating two and outs yourself). Volunteers to compute two and outs or compare against known two and out values are welcome in order to identify errors or edge cases. Please reach out to CFLdb to confirm work required. All audit submissions, either to confirm accuracy or report errors, will be credited.
Points off Turnovers — Calculated, experimental and not official. All points scored as the result of the turnover are counted, including points off the subsequent kickoff. There are no known issues with the Points off Turnover calculations, but as it has only been validated manually against a few games, there may exist edge cases which are calculated incorrectly (both positive and negative failures).
Resolution: No workaround to this issue is presently known (beyond manually calculating points off turnovers yourself). Volunteers to compute points off turnovers or compare against known points off turnovers values are welcome in order to identify errors or edge cases. Please reach out to CFLdb to confirm work required. All audit submissions, either to confirm accuracy or report errors, will be credited.
CFLdb does not credit coaches with decisions when they were not on the sidelines (for instance, away for medical or personal reasons). An interim coach is listed for these games and credited with any win/loss. This appears to be contrary to the official CFL practice, therefore, CFLdb coaching records may differ from official league records.
Resolution: No resolution is planned for this issue. CFLdb believes this accurately reflects coaching decisions. For official statistics, always refer to CFL sources.
The listing of team coaches with coaches indicated as the nth coach on CFLdb may not match team announcements and records. There are a number of reasons for this. CFLdb automatically numbers coaches as known in the database, which may have extra or missing coaching terms. Teams may also included coaches from outside their team name history, not count interim coaches, and count multiple interrupted terms of a coach as only one.
Resolution: Work is currently planned to convert coaching relationships from the team level to the club level, which will allow coaching history to be listed for the full history of the club. There are no fixes planned for the combining of multiple coaching terms or excluding interim coaches (see above) in the listings and ordering of team coaches. Be aware of these discrepancies while referring to this information. For official statistics, always refer to CFL or team sources. If you find a data issue contributing to incorrect coach numbering on CFLdb Statistics, please report the error so it may be corrected.
CFL donated roster and games played statistics are the basis of roster and player participation numbers from 1930 to 2012 on CFLdb Statistics. For subsequent seasons, CFLdb has added roster and games played info, auditing against official sources when available. CFLdb Statistics is an unofficial source and official CFL sources should always be referred to when needed.
Errors in Games Played numbers may affect accuracy of Games Played Leader lists on league and team pages. Official CFL sources should always be referred to when needed.
Active Games Played numbers may not be accurate to most recent games as roster/games played information may not be updated continuously through the season. Until final published numbers are available to confirm and audit numbers, Active Games Played leaders provide a guide to most experienced players, but not official numbers or order of leaders. Official CFL sources should always be referred to when needed.
Resolution: Official CFL sources should always be referred to when needed.
Game scores have been verified against multiple sources, all obvious errors discovered through compilation have been corrected and are believed to be 100% accurate. However, there are some discrepancies in the compiled data compared to CFL published standings. These differences are (+ indicates CFLdb compiled totals are above CFL listed totals, - indicates CFLdb compiled totals are below CFL listed totals):
These discrepancies indicate either an error in recorded game scores on CFLdb or a tabulation error present in CFL standings. If you can find the error in the data for these issues, please let CFLdb know.
CFLdb Statistics currently only handles the Point Scoring system. Some games have been converted from the Challenge System to Point System to indicate the proper result, with additional information in the game notes. Games using the Tie System may not indicate the correct result, as games were declared a draw if not won by the agreed upon points.
Resolution: Be aware of different scoring systems, especially in other leagues and seasons prior to 1910. While ideally the database will handle the different scoring systems someday, it is currently not a high priority to address.
Tie-breaker games need to be included in tie-breaking formula. Tie-breaking formula is not known for other leagues and historical seasons. When a tie cannot be properly broken, known standings are used to order teams correctly.
Resolution: The correct standings order is shown for historical seasons when official order is known, even if tie-breaking formula to arrive at is not known. Otherwise, best guess tie-breaking formula is used. CFLdb accepts information on league tie-breaking formulas, games, and standings order to correct any standings that are incorrect.
Level of opposition is not always noted. Intermediate and junior teams may not be indicated when playing senior teams in exhibition games (which are sometimes city championships).
Resolution: Continuing efforts to improve data are addressing missing or misunderstood team levels, primarily from CFLdb contributors. If you see an error, and have a correction, please submit and your contribution will credited appropriately.
Only the 1996 season has Player of the Game awards listed, the only season known to CFLdb to have league-wide sponsored Player of the Game awards. This is also reflected on the league season Star Selections list and player Star Selections list. Team, broadcaster or other sources of Player of the Game awards for any season are not present in the database.
Resolution: CFLdb accepts contributions of player of the game award lists for seasons. It would be preferred if such contributions were complete for each season of the league or team being contributed.