pastperformance Start of a historic quip It's not proof of future success It's no guarantee of future results Horse's track record History class: F -- The professor ignored my attendance record and class participation, judging me entirely on ___ With 36-Across and 55-Across, a sales pitch disclaimer With 37- and 57-Across, a common warning Stock-price factor Factor a bettor weighs (Part 1) Underdog's motivation (Part 1)