NEW YORK -- Bill Hohn has retired after 23 years as a major league umpire and been replaced by Todd Tichenor.
Hohn missed the 2011 season because of back and neck issues. The 56-year-old worked the division series in 1996, 1998 and 2005, and the 1994 All-Star Game. He was behind the plate for Hideo Nomo's no-hitter for the Los Angeles Dodgers at Colorado on Sept. 17, 1996.
The 35-year-old Tichenor, a member of the Triple-A Pacific Coast league staff since 2004, has worked 530 major league games as a fill-in umpire.
Major League Baseball said Thursday that umpires will wear patches this year honoring their late colleagues Marty Springstead and Harry Wendelstedt.
Springstead was an AL umpire from 1966 to 1985, and Wendelstedt an NL umpire from 1966 to 1998.