Number 31 was worn by umpire Mike Reilly in the American League (AL), and it was assigned to Reilly when the AL and NL merged their umpiring staffs in 2000, so when Davidson returned to MLB, he was assigned 61 as his new number.
The jersey with the number 31 was worn by umpire Mike Reilly in the American League (AL), and it was designated for Reilly when the AL and NL combined their officiating teams in 2000. As a result, Davidson received the number 61 when he rejoined MLB.