MLB's foreign-substance enforcement leads to public embarrassment

Sticky stuff 101 - Everything you need to know as MLB's foreign-substance crackdown begins - ESPN

Three Different MiLB Pitchers Ejected For Foreign Substances This Weekend — College Baseball, MLB Draft, Prospects - Baseball America

MLB foreign substance rule: What to know about suspensions, umpires

Sticky Situation – MLB's Crackdown on Foreign Substances

MLB pitchers ponder expectations for them as new substance rule takes effect

MLB foreign substance crack down: Six things to know about baseball's sticky situation

MLB foreign substance crackdown may end up causing hysteria

MLB working to combat cheating after sticky baseballs become a concern

MLB's enhanced plans for enforcement of foreign-substance rules being finalized, with June rollout pending, sources say - ESPN

Twins' Tyler Duffey not a fan of umpires' checks for foreign substances