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.
When Welke started with the American League, he wore uniform number 30. However, following the merger of the American and National League umpires in 2000, he switched to number 3.  His brother, Bill, is also an MLB umpire.