No.
Carlos Delgado wore #21 in 2009 and has worn it for the Mets since 2006.
Carlos Delgado Kevin Elster
Lucas Duda is number 21 on the New York Mets.
21
He is number 21
Rafael wore jersey number 21 for mancunian republic in 2010-2011.
The number on his jersey is 22 during high school and college. When he went pro he was number 21.
21
Eric Wright currently wears the #21 jersey.
Roger Clemens wore number 21.
21 on the San Diego Chargers
21
When Spahn came up to the Braves in 1942, he wore #16. After fulfilling his military service, he returned in 1946 and wore #21 for the rest of his time in MLB (1946-1964 with the Braves, 1965 with the Giants and Mets).