X different Opening Day Starting Center Fielder in X Seasons (since 1914)
Baseball-Reference takes us back until 1914 and while Retrosheet provides starting pitchers in their game logs, it doesn't have that for other positions.
The 12-player streak at the top includes three notable guys who aren't really thought of as Cubs: Bobby Thomson, Richie Ashburn and Lou Brock. Lance Johnson started the 1995-2003 run by the White Sox before snapping the nine-year run by the Mets in 1997.
Here's the full list of center fielders from the teams shown above. Some interesting names here include future Hall of Fame manager Dick Williams, the well-traveled, terribly-underrated Kenny Lofton and the tragic case of Lyman Bostock.