The horse head mask has been weirding out the Internet for over a decade, but its dark powers have not yet been harnessed in the realm of sports -- at least, not until now:

That's Yankees pitcher Shawn Kelley during warm-ups on Saturday, wearing the horse head mask in an attempt to inspire his team. It's even worked, sort of. The Yankees are 5-0 since Kelley started wearing the mask, and though we recognize the volatility of small sample sizes, we really don't want to anger the horse.

"You can't help but laugh at a guy in a horse head," Yankees catcher Brian McCann told Yahoo! Sports, but we beg to differ. You can look at a guy in a horse head and cry. You can look at a guy in a horse head and shudder. You can look at a guy in a horse head and feel terror.