the time, he had undergone a total of nine knee surgeries during his career. Bosio did not pitch professionally after the 1997 season. Coaching career After retiring as a player, Bosio began a career in coaching In 1998. He was a special assignment pitching coach in the Seattle Mariners' organization from 1998 to 2002. In 2001, he was the pitching coach for the Triple-A Tacoma Rainiers. The Rainiers were 2001 co-champions of the Pacific Coast League (PCL) and Bosio led their pitching staff to the lowest earned run average in the PCL, working with future-Major Leaguers Brian Fuentes, Brett Tomko, and Joel Piñeiro. He also had the most valuable pitcher in Denny Stark, who went 16–2 with a 2.43 ERA. Bosio also served as an advanced scout for the Mariners during their 116-win season. In 2003, Bosio was the Tampa Bay Devil Rays pitching coach for Lou Piniella. Leaving baseball after the 2003 season for family health reasons, Bosio moved his family to Appleton, Wisconsin. In 2006, he was the assistant pitching coach at the University of Wisconsin–Oshkosh, and in 2007 the pitching coach and then interim manager at Lawrence University. Bosio joined the Cincinnati Reds organization in 2008, serving as pitching coach at their Double-A Chattanooga Lookouts. He was named to the same position for 2009 with the Carolina Mudcats, the Reds' new Double-A affiliate, but instead signed on with the Milwaukee Brewers' farm system. During the 2009 season he served as the Triple-A Nashville Sounds pitching coach. He helped lead the Sounds' pitching staff to the lowest earned run average in the PCL at the time of his promotion to the major league coaching staff, when on August 12 he replaced Bill Castro as pitching coach for the Brewers. In October 2009, Bosio was named major league advanced scout for the Brewers. Bosio joined the Chicago Cubs coaching staff before the 2012 season, as part of team president Theo Epstein's revamping of the organization. Bosio spent six seasons as Cubs' pitching coach, and received his first championship ring when the Cubs won the 2016 World Series, their first championship in 108 years. On July 7, 2016, Bosio and outfielder Albert Almora, Jr. reacted to a fan who fell onto the field before a game at Wrigley Field. Bosio was fired by the Cubs on October 21, 2017. On November 2, 2017, Bosio was named the pitching coach for