Northwestern, Cubs groundskeepers work together seamlessly to change the 'Friendly Confines' into a gridiron.

Inside Wrigley’s transformation for NU-Illini game

Painting the marquee purple is the easy part. The rest of the project to convert Wrigley Field for Saturday’s football game between host Northwestern and Illinois was an effort that began as a concept almost two years ago. The last month has seen it turn into a labor-intensive reality.

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