The White Sox added a flamethrower to their bullpen.
Guerrero's most eye-catching attribute is his triple-digit fastball. He averaged 98.9 mph on his four-seam fastball in 2019 and threw the second most 100-mph pitches (178) of any pitcher in baseball. He posted a 10.6 K/9 in 2018.
But throwing hard and giving up runs are two different things. In 2019, Guerrero had a 6.26 ERA, a number that jumped up from the already less-than-ideal 5.43 ERA he turned in a year prior. He also had some trouble locating said fireball, walking 36 batters in 46 relief innings in 2019 for a ridiculously high 7.0 BB/9.
Still, this type of addition was signaled as perhaps the primary way the White Sox would add to their bullpen this offseason. With so many other items on Rick Hahn's offseason to-do list and the back end of the bullpen being a pretty stable part of the roster, the general manager said that small signings and waiver claims would continue to be part of the strategy when it comes to making additions to the relief corps.
Hahn referenced the team's acquisitions of Evan Marshall, who was signed to a minor league contract last winter, and Jimmy Cordero, who was claimed off waivers in the middle of the 2019 season, as moves to emulate going forward.
"All 30 teams will tell you ... that adding more bullpen pieces is an offseason priority, and we're no exception," Hahn said during his end-of-season press conference in September. "Cordero's been a nice find, as has been Marshall, but that's not going to stop us from continuing to potentially take guys off waivers like Cordero or (sign) minor league free agents like Marshall.
"It's going to go into this offseason continuing to be a place we want to add because relievers are tricky. You see it every year, guys go from the top of the list to the bottom and back."
As Hahn frequently says, you can never have too much pitching, and while this might be a low-risk move, it could end up proving fruitful, as those Cordero and Marshall moves did.
Spending on money on more proven guys has also been a part of the White Sox strategy in this department in the recent past. Hahn's front office gave Kelvin Herrera a two-year deal just last winter. But as Herrera showed during a rough first year of that contract, even guys with good track records can lead to easy second-guessing on those kinds of deals. So building up depth through less splashy means figures to be a good idea, regardless of the results.
White Sox add flamethrowing Tayron Guerrero to bullpen originally appeared on NBC Sports Chicago