Criminal Sentence 383: Long Baseball Game?

From my local newspaper (about the Diamondbacks):

"Ian Kennedy pitches 62-3 scoreless innings..."

I'd watched the game but still had to stare at this for a minute before I understood what it was talking about. I knew the game hadn't gone 62 and something innings. Try 9. It turns out that a hyphen isn't a slash: 6 2/3 innings.