When actors portray athletes in movies their believability in the roles is a crapshoot. For every Kevin Costner in Bull Durham, there’s a dozen Tim Robbins in Bull Durham. I decided to take a look at a handful of actors who portrayed high school athletes in 1980s (and one early 1990s) movies and see how they stacked up to contemporary non-movie athletes of their time. Anthony Michael Hall: Johnny Walker, QB, Johnny B. Good (1988) Height: 6’1” I know, right? I would have thought 5’7”. He’s actually about average size for a quarterback. Weight: Believe it or not, Anthony Michael…