Tony La Russa ripped his own player after Yermin Mercedes' homer

Trevor Bauer backs Yermin Mercedes in battle against baseball's unwritten rules

Tony La Russa not amused by Yermin Mercedes teeing off on position player's 47 mph eephus pitch

White Sox's Tony La Russa in the wrong on Yermin Mercedes and unwritten rules

Upset' Tony La Russa defends unwritten rules, calls out own player after Yermín Mercedes' 3-0 home run

Rogers] Tony La Russa was 'upset' that Yermin Mercedes hit a home run on a 3-0 count last night in a blowout win. “He made a mistake. There will be a consequence

Chicago White Sox manager Tony La Russa critical of Yermin Mercedes; Minnesota Twins throw behind slugger night after HR - ESPN

Yermin Mercedes and Tony La Russa Clash Over Unwritten Rules - The New York Times

Orioles-White Sox series preview: A tough place to snap the skid - Camden Chat

White Sox' Yermin Mercedes has an unwritten rule: To be himself — always - Chicago Sun-Times