Browns’ Crennel starts crucial 3rd year

A knotted rope dangles from the ceiling just inside the glass front doors of Cleveland’s team headquarters, a symbolic reminder for the Browns to hang on tightly as they climb together. Romeo Crennel better grip it with both hands. And feet. Just 10-22 in his first two seasons as Cleveland’s coach, Crennel, who came to the Browns with a handful of Super Bowl rings he won as a defensive assistant, is…