The asa now has over 275,000 registered softball teams and thousands more unregistered teams play across the country. The fan base is growing as well millions watched the american women win the gold medal at the atlanta olympics. Amateur softball association of america, softball publisher oklahoma city the amateur softball association of america collection inlibrary printdisabled internetarchivebooks china digitizing sponsor internet archive contributor internet archive language english. 2008 official rules of softball adopted, published and distributed by the amateur softball association of america 2801 ne 50th street oklahoma city, oklahoma 73111-7203 (405) 424-5266 fax (405) 424-3855 all rights reserved. The canadian amateur softball association (softball canada) 201920202021 official guide and rule book. Official softball rules adopted, published and distributed by the canadian amateur softball association. 223 colonnade road south suite 212 ottawa, ontario k2e 7k3 canada t 613. In order to keep the fastpitch america softball association rulebook as streamlined as possible, we will refer back to the national federation of high schools (nfhs) rulebook for all rules and case studies. Addendum to the fifth edition book is in yellow background and italicized. All changes to the fifth edition rules are also highlighted in yellow.