MLB catchers wary of looming robo umps amid rules changes

Cincinnati Reds catchers run drills during an MLB spring training baseball practice, Friday,in Goodyear, Ariz. (AP Photo/Matt York)

Milwaukee Brewers catcher William Contreras catches during a spring training baseball workout Thursday in Phoenix. (AP Photo/Morry Gash)

Seattle Mariners manager Scott Servais spent parts of 11 seasons and nearly 800 games behind home plate as a catcher with four franchises, mostly in the 1990s.