From 2016 through now there have been 100 pitchers who have thrown at least 400 innings. Over that time Chase's FIP- of 108 ranks 81st (in the same neighborhood as Clayton Richard, Anibal Sanchez, Marco Estrada), while his ERA- of 88 ranks 31st (in the same neighborhood as Patrick Corbin, James Paxton, Jake Arrieta). His ERA of 3.74 has outpaced his FIP of 4.59 by 0.85 runs, the largest margin in the sample. For whatever reasons certain pitchers are able to consistently outperform their peripherals & I think the sample is large enough that Chase has shown he is one of those guys. Most of this appears to be the result of him allowing a .298 wOBA with runners on base (in the same neighborhood as Gerritt Cole, MadBum, Carlos Carrasco) compared to a .325 wOBA with the bases empty (in the same neighborhood as Jason Vargas, Trevor Cahill, Dan Straily). If he's healthy the option seems like a no brainer.