A distant third in terms of usage, Olson’s changeup has been reliably average. It’s a decent change-of-pace offering that has held a 40% chase rate throughout his career.
Throwing the hook almost as much as his fastball, Olson has had some success with the deuce. Opposing hitters have only managed a career .242 wOBA against the pitch, and he’s manintained a 35% K rate.
Olson’s fastball has already seen a dip in velocity, even from the low-90s heat he came up with. The high-80s cheddar isn’t fooling anyone, and he’s yielded a career .382 wOBA.
Olson has all but dropped his slider, throwing more of a sinker as a de facto fourth pitch. Either way, it’s nothing to get excited about.
Olson’s fastball has hovered around 88 mph throughout his career, but he has survived thanks to pinpoint location. That went away from him in 2019, with a career-low 49.2% zone rate contributing to a .923 opponent OPS and a -0.7 pVal.
Olson’s bread and butter is his big loopy curveball, which gained two additional inches of movement on it last season. That led to a career-high 21.6% swinging-strike rate and a .477 opponent OPS. For Olson to find success as a LOOGY, this pitch will need to keep missing bats at an above-average rate.
Olson’s changeup generated a nice 40.0% O-swing rate and a solid 15.2% swinging-strike rate, but his inability to find the zone (24.2%) and opponents tendency to smash it when they did make contact led to a .855 OPS and a -1.3 pVal. This isn’t Olson’s best offering, but can be a useful pitch against right-handers when he’s locating it.