Buster Posey opts out of playing for San Francisco Giants in coronavirus-shortened MLB season - CBS News
S.F. Giants Star Buster Posey Opts Out Of MLB Reboot, Preemie Twins In NICU
Coronavirus: Giants' Buster Posey opts out of MLB season - Los Angeles Times
MLB players who are opting out of the 2020 season - ESPN
Buster Posey's greatest MLB moments
Buster Posey - San Francisco Giants Catcher - ESPN
Buster Posey Announces Retirement - MLB Trade Rumors
Giants' Buster Posey elects not to play in 2020
Buster Posey opts out of 2020 MLB season - McCovey Chronicles
SF Giants' Buster Posey opts out of 2020 pandemic-shortened baseball season