In May of 2022, my preview of the Rockies/Diamondbacks series looked at core players. Core players were under team control through 2024, played a position (excluding bench players) or were in the rotation or were the closer. With 12 core players instead of 9, the Diamondbacks had more core players.
The following table shows the May of 2022 core players. Note that grey-texted Blackmon and Bard were not core, but were later extended through the 2024 season.
What happened next?