Every year, it seems, a hot new pitch type spreads across the Major Leagues. One season is the year of the high four-seamer.

The Athletic tracked the fate of every baseball used in two major-league games earlier this summer. Here's what we found.

true 12-6 curves and fading changeups from one of the most extreme over-the-top deliveries in baseball. He looks like Tim Lincecum but he drops and drives like Tom Seaver. "I think that, yeah, my slot ...