Greinke is developing a bond with catcher Welington Castillo early in camp, Jack Magruder of Fanragsports.com reports.
Greinke prefers working with just one catcher, and it appears that Castillo will be the man. Last year, Yasmani Grandal caught 26 of Greinke's 32 starts. Grandal was rated as a better pitch-framer than Castillo in 2015, so it will be interesting to see if Greinke's performance is impacted by his new receiver.