CHICAGO (CBS) — Some Chicago kids could hardly believe it when former President Barack Obama made a surprise visit on Tuesday.

Mr. Obama showed up for a practice for the Chicago Southside Wolfpack youth football team in Jackson Park.

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Mr. Obama had some advice for the players.

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“Sometimes, you’re going to have some doubts. Sometimes, you’re going to make mistakes. Sometimes, you won’t get what you want right away,” he told the team. “But the key is – can you build that strength in yourself to come back?”

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The team will soon have a new field to play on at Jackson Park, ahead of the groundbreaking of the Obama Presidential Center later this year.

CBS 2 Chicago Staff