MLB team values: Arizona Diamondbacks gain value in 2021 most valuable baseball teams list Forbes recently released its MLB team values for 2021 and it values the Arizona Diamondbacks at $1.32 billion, up 2% from 2020, when the franchise was worth $1.29 billion.
The Diamondbacks are the 20th most-valuable franchise in baseball, the same position they held in 2020 and 2019.
