Nick Markakis opts out of the 2020 season with Braves
Pandemic Baseball Chronicles: Phillies shut down after positive tests, Joe Kelly goes headhunting and Nick Markakis opts back in - Bleed Cubbie Blue
Dansby Swanson turning the Braves offense into a different beast
Braves' Nick Markakis opts out after 'eye-opening' Freddie Freeman talk - ESPN
Schultz: As Nick Markakis opts out, Braves learning that plans mean nothing - The Athletic
Big Stars Are Sitting Out the MLB Season. Other Players Have No Choice but to Play. - WSJ
Nick Markakis joins Félix Hernández as Braves to opt out of 2020 MLB season
Nick Markakis says 'eye opening' conversation with Freddie Freeman led to decision
These 25 Players Opted Out Of MLB In 2020. How Are They Doing In 2021?