Major League Baseball announced today that Todd Tichenor has been promoted to the full-time Major League Umpiring staff.

Tichenor, 35, has umpired professionally since 1999. He worked in the Triple-A Pacific Coast League from 2004-2011. Tichenor has worked Major League Spring Training since 2006 and has been called up to the Majors during the regular season each year since 2007. He has worked 530 Major League games as an umpire during the regular season. Tichenor, who will wear number 97, will work on Brian Gorman’s crew, along with Larry Vanover and Tony Randazzo. The crew will work the season-opening series between the Philadelphia Phillies and the Pittsburgh Pirates, beginning today in Pittsburgh.

Tichenor fills the spot of Bill Hohn, who has retired. Hohn umpired in the Major Leagues for 23 years, beginning as a National League Umpire in 1989. Hohn worked three Division Series (1996, 1998, 2005) and the 1994 All-Star Game in Pittsburgh in his career. He also was behind the plate for the no-hitter by Hideo Nomo of the Los Angeles Dodgers on September 17, 1996 at Coors Field in Colorado.

Several umpires will wear new numbers in the 2012 season: Dan Bellino (previously number 93) will wear number 2; Mark Carlson (previously number 48) will wear number 6; Bob Davidson (previously number 6) will wear number 61; and Bill Miller (previously number 26) will wear number 14.

In addition, beginning on Opening Day, the Major League Umpires will wear patches in honor of late Umpires Marty Springstead and Harry Wendelstedt. Springstead was an American League Umpire from 1966-1985, served as the A.L.’s Executive Director of Umpiring from 1986-2000 and was an Umpire Supervisor for Major League Baseball from 2000-2010. Wendelstedt, an N.L. Umpire from 1966-1998 and the father of current Major League Umpire Hunter Wendelstedt, worked five World Series and was behind the plate for a record-tying five no-hitters. The Harry Wendelstedt Umpire School has trained countless current and former Major League Umpires.