Sometimes baseball stats do a double take—and that’s exactly what Toronto Blue Jays infielder Lenyn Sosa has pulled off early this season. In a quirky statistical twist, Sosa’s on-base percentage (OBP) is actually lower than his batting average, a rare reversal that’s turning heads in the baseball world.

Through May 2, Sosa is hitting .257 at the plate, but his OBP sits at .254. Wait—how is that possible? Typically, OBP is higher because it includes walks and hit-by-pitches. But Sosa has yet to draw a single walk in 72 plate appearances, and that’s the key to the puzzle.

Here’s the breakdown: Batting average counts hits divided by at-bats. On-base percentage counts times reaching base divided by plate appearances—which includes sacrifice bunts, sacrifice flies, and walks. Sacrifices don’t count as at-bats but do count as plate appearances. So if a player makes an out on a sacrifice, it hurts OBP (like an 0-for-1) but doesn’t affect batting average (like an 0-for-0). For Sosa, with 18 hits in 70 at-bats and zero walks, his plate appearances total 72. That math gives him a .254 OBP—just below his .257 average.

It’s a statistical oddity, but it also highlights a clear area for growth. A zero-walk streak over 72 trips to the plate is rare and suggests Sosa might want to be a bit more patient at the dish. Still, for now, it’s a fun reminder that baseball numbers can tell surprising stories—even in the early going.