MLB's nickname gimmick won't solve baseball's mounting age issues, MLB
PLAYERS' WEEKEND, NICKNAMES ON JERSEYS RETURN TO MLB AUGUST 23–25, by Caitlin Moyer
The Cardinals can wear nicknames on their uniforms - A Hunt and Peck - Viva El Birdos
MLB Players' Weekend: History of nicknames on jerseys in baseball - Sports Illustrated
MLB Players Weekend jersey nicknames are the worst
2017 TOPPS NOW #PW-20 HANLEY RAMIREZ WEARS "EL TRECE" FOR MLB PLAYERS WEEKEND
Astro's Dad'? The Red Sox will be wearing these nicknames on their jerseys soon - The Boston Globe
Royals not very creative in nicknames for “Players Weekend” - Royals Review
As MLB Players' Weekend returns, Cleveland Indians players stand out with nicknames, uniforms, cleat designs
Memo: MLB players can use nicknames on back of jersey, wear bright-colored shoes during 'Players Weekend
2019 MLB Players' Weekend nicknames