The Cubs on Monday named PJ Mainville the club's new head athletic trainer. He replaces Mark O'Neal, who will remain in the organization in a new role in the medical department.
Mainville, 37, joins the Cubs after spending the last two seasons as the assistant trainer for the Arizona Diamondbacks at the major-league level. He previously worked as the Diamondbacks' minor-league training coordinator from 2007-10.
He has 15 years of athletic-training experience in pro baseball, including six with the D'Backs and nine in the Baltimore Orioles' minor-league system.
Mainville graduated from East Carolina University in 1997 and received a masters of science degree from California University of Pennsylvania in 2005. He is a certified member of the National Athletic Trainers Association and the Professional Baseball Athletic Trainers Society.
O'Neal came to the Cubs in late 2004 and stabilized the department after the team fired trainers after the 2003 and 2004 seasons.