The first wireless bullpen communication system in baseball history is used at Wrigley Field when a cell phone, which will be sent to the Hall of Fame, is used for the first time in major league history to call the bullpen. From the dugout, Cubs pitching coach Larry Rothschild calls the bullpen during the third inning to start warming up reliever Angel Guzman.

On June 13 2006, The first wireless bullpen communication system in baseball history is used at Wrigley Field when a cell phone, which will be sent to the Hall of Fame, is used for the first time in major league history to call the bullpen. From the dugout, Cubs pitching coach Larry Rothschild calls the bullpen during the third inning to start warming up reliever Angel Guzman.