Every time I see him on TV, or even see him mentioned on this board, I think of that.
I mean, I get it if Heyward was an obscure minor leaguer who got called up briefly to round out the bench due to injury or something, and he called him that a couple times, and that was it. But the dude was an uber-prospect who was the most popular player on the team for like 5 years, a pretty good player, and he called him "Haywood" probably 50% of the time he said his name. It was dumbfounding and hilarious at the same time.