Walker Buehler: Set to replace Ryu in rotation May 03, 2018 Walker Buehler: Buehler will replace Hyun-Jin Ryu (groin) in the starting rotation, J.P. Hoornstra of the Los Angeles Daily News reports. Visit RotoWire.com for more analysis on this update. Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus