Trey Mancini, Buster Posey win 2021 MLB Comeback Players of the Year
Buster Posey - Bay Area Sports Hall of Fame
Buster Posey, Brandon Crawford finalists for Players Choice Award – NBC Sports Bay Area & California
Buster Posey, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
Buster Posey “thrilled” as he joins Giants' ownership group
Giants' Buster Posey explains why he chose to retire from MLB – NBC Sports Bay Area & California
Buster Posey - Awards - The Baseball Cube
Giants' Posey, Orioles' Mancini win Comeback Players of the Year
Thank You Buster - Diamond Digest
MLB News: Giant farewell: Buster Posey retires with three World Series titles
SF Giants' Buster Posey set to announce retirement on Thursday, per report – Daily Democrat
Buster Posey named 2021 NL Comeback Player of the Year