Due to sheet placement or misalignment during the printing process, this card is very prone to tilt. Even the recent PSA 10 that ended with PWCC has a slight tilt (most evident when viewing the reverse scan). I notice the same tilt on many PSA 9s (I cheated a bit by buying a PSA 9 already graded, but it's a tough card even going that route).
Bottom line... just look at that
photo on the card. The perfect capture of a moment in time and simply a great action shot. Once again, '77 Topps knocks it out of the park. Here's the PWCC PSA 10...