If he swung at it 3-0 then clearly he identified it out of the hand as the type of pitch he was looking for. It was a nasty 98 mph FB with rise, just a hair above the zone. The pitch is practically designed in a lab to deceive a hitter into thinking they can crush it until it is juuuust too late to stop the swing. Hitters making pitch identification mistakes are like, the most common think in baseball. It's the entire game, really. If everyone could judge a pitch correctly out of the hand and make decisions accordingly there would be no sport.
Taking the basic 3-2 slider down the middle was what was actually a mental fart by Teoscar. Swinging at the 3-0 pitch was a justifiable decision with an understandably unfortunate result.