While at a charity event earlier this month, New York Giants defensive end Justin Tuck told

As it turns out, Mr. Tuck isn't an outlier. Indeed, former U.S. Olympians, baseball players, gridiron greats and soccer players fill out the ranks of developers and brokers in the competitive field of New York City (and American) real estate. After the jump, a small sampling of the sportsmen who have known the thrill of victory and the agony of defeat, both on the pitch and at the negotiating table.

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