WATCH: Roger Federer Plays Tennis Wearing Google Glass

Turns out Google Glass is good for more than just advertising your disposable income: it can also be used to make oddly satisfying videos of tennis pros at play.

Roger Federer and Stefan Edberg recently visited Google’s headquarters in Silicon Valley and took some Glass up to rooftop, to the company tennis court (of course), for a quick game.

There’s plenty of swinging, jumping, and lightning-quick rallys, but where the first-person perspective really shines is in capturing every single grunt. Holy heck, these dudes grunt SO much.

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