Kansas City Chiefs rookie De'Anthony Thomas will be wearing No. 13 this season for the Chiefs. He was wearing No. 1 ever since he was drafted by the Chiefs last May.
#Chiefs players changing numbers: De'Anthony Thomas - #13 Demetrius Harris - #84 Kelcie McCray - #24 Mike McGlynn - #75 Albert Wilson - #12— BJ Kissel (@ChiefsReporter) August 30, 2014
DAT's jersey number became of interest because of the NFL's rules on jersey numbers. Running backs are supposed to be numbered 20-49 while receivers can be 10-19 and 80-89. DAT's jersey number of 1 would have classified him as a quarterback, kicker or punter, which he obviously is not.
No. 13 would mean the Chiefs are classifying him as a receiver ... which doesn't really matter. Except for jersey purposes. The Chiefs can still use him however they want.
If you remember, Dexter McCluster was No. 22, a running back number, despite later becoming more of a receiver for the Chiefs.