Cubs 2021 Opening Day roster
2021 Chicago Cubs Instructional League Roster — College Baseball, MLB Draft, Prospects - Baseball America
Cubs minor league affiliates unveil rosters as season approaches - Marquee Sports Network
One more look at the Cubs' choices for the Opening Day roster - Bleed Cubbie Blue
Where's Pedro?, Fire Ryan Poles
The 2022 Cincinnati Reds Opening Day Roster - Redleg Nation
Cubs 2021 Opening Day roster
Cubs Roster Moves: Tepera and Ryan Up, Abbott to Triple-A, Wieck Hits IL - Bleacher Nation
2021 ZiPS Projections: Chicago Cubs
Who makes it to Chicago on Opening Day? Cubs roster projection 1.0 - CHGO