By Burt Constable bconstable@dailyherald.com Universally beloved, always upbeat and a legend in suburban high school sports, Bob Frisk's rough entry into the sports section of this newspaper shaped his career. As a member of a strong Arlington High School track squad, Bob's relay team botched a baton handoff and lost the race. This newspaper's headline referred to "Frisk's fumble." Bob never forgot that.