Anquan Boldin changes numbers out of respect for Calvin Johnson

New Lions receiver Anquan Boldin has worn No. 81 throughout his 13-year NFL career, but in Detroit he’ll wear No. 80. Boldin said after arriving in Lions camp that he didn’t even ask for No. 81 because it’s the number Calvin Johnson wore before retiring this year. Although the Lions haven’t retired Johnson’s jersey, Boldin…