Contact Rate stat differences

[stembot]

Does HQ have a different stat provider for hitter contact rate?

I've seen a few examples but can only recall one right now:

Billy Hamilton has a 77% CT right now per HQ's stats.

Fangraphs gives him 82.5%.

I'm assuming there's a difference in stat source? Or maybe HQ defines contact differently than Fangraphs?

http://www.fangraphs.com/statss.aspx?playerid=10199&position=OF#platediscipline

[RAY@HQ]

I can't speak to anyone else's formulas, just ours.

Our ct% is (AB-K)/(AB)

For Hamilton before today's game, that's (81-19)/81 = 62/81 = .768 = 77% ct%