CHICAGO, Jan. 9 (AP)—The rules committee of the American Football Coaches Association ironically came up with a 9‐9 deadlock in voting today on a proposal for a college tiebreaking rule.

The coaches, meeting simultaneously with the National Collegiate annual convention starting Thursday, recommended several changes for consideration by the N.C.A.A. rules committee that meets at Mobile, Ala., Jan. 17.

One change would permit unlimited substitution when the ball was ruled dead. Another would bar the use of hard drugs “at any time” in football competition.

“We had a discussion on the growing problem of youth using uppers and ‘downers’ and decided to take a formal stand against nontherapeutic drugs,” said Jack Curtice of Santa Barbara, (Calif.) College, head of the coaches' group. “Many coaches, like many parents, have been pretty naive on this serious problem.”