Welke wore number 30 when he joined the American League staff, then switched to 3 after the AL and National League umpiring staffs merged in 2000. His brother Bill is also a major league umpire.
Welke's initial uniform number (30) was assigned when he joined the American League staff. After the merger of the AL and NL umpiring staffs in 2000, his number changed to 3. His brother, Bill, is also an MLB umpire.