Serenity Caldwell is, secretly, a member of a top 10 women’s roller derby team. The iPhone X dropped the same day as the WFTDA’s annual international championships.

What better test for the iPhone X than to put it through its paces trying to capture some high speed flat track action?

Serenity’s writeup takes you through the specifics, but for my money, the real nugget of gold in her review is the pulse-pounding video embedded below. Those are some great slo-mo shots.

Be sure to bump the resolution up to 1440 in the YouTube window for best results.