The "Yearbook" averages on this website are the averages that were reported by the League Secretary for May 31st, 2025. The Women's and Men's averages contained herein are the final averages for all CTF sanctioned leagues a bowler bowled in the GTTBA. The HIGHEST AVERAGE IS LISTED AND IS THE LEGAL FINAL AVERAGE TO BE USED FOR LEAGUE OR TOURNAMENT PURPOSES UNLESS TOURNAMENT RULES STATE OTHERWISE. Only the names of those bowlers who purchased CTF membership cards will appear in these listings.
You will notice that in the average listings there are 5 columns following the bowler's name. The first column gives the bowler's gender, second shows the league(s) the bowler bowled in, the third is the number of pins knocked down in league play, the fourth column gives the number of games bowled by the individual, and the last column shows the bowler's final average for each CTF sanctioned league in which a bowler has competed.
Any special conditions regarding the averages will have a Code shown to the right of the average, for example, S = Sport Average and C = Challenge Average. These averages must be converted to a Standard average using the appropriate Conversion Chart shown on the CTF website. - Sport and Challenge Conversion Chart.
Due to the COVID-19 Pandemic, the Greater Toronto Tenpin Bowling Association will no longer be printing a hard copy version of the Yearbook, effective for the May 31, 2020 Yearbook. The GTTBA Yearbook, and all the pages previously printed in the Yearbooks, will be posted on the GTTBA website as they become available each season.
The GTTBA Yearbook averages make a handy reference for Tournament Bowlers who wish to make sure that they are using their highest Yearbook Average for entering Tournaments in Canadaor the USA. League Secretaries will also find the GTTBA Yearbook information to be a handy reference when starting up their Leagues for the Fall or Summer sessions, and when new bowlers are joining the league.
NOTE: There have been a few mistakes noted in the 2006-2007 GTTBA Averages Yearbook which were resultant due to a programming glitch, some of the averages are not posted in the 2006-2007 GTTBA Averages Yearbook. If you do not see your average in the book, or the average is wrong, please contact the Greater Toronto Tenpin Bowling Association, as there have been some further corrections sent in. There is a more current listing of the Bowler's Averages on this web site. This same problem was also seen in the 2005-2006 GTTBA Yearbook.
NOTE: Summer 2017 League Averages are posted on the web site but are not included in the 2016 - 2017 Averages Yearbook due to the time of printing.
Last updated on Wednesday, September 24, 2025
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