Convenience Big Store: He went to prison. Then he reinvented himself as a boxing coach for NBA stars.

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Boxing coach Mark Owens observes as clients participate in a conditioning drill in Houston, Thursday, Sept. 4, 2025.

Photo by: Kirk Sides, Houston Chronicle

He went to prison. Then he reinvented himself as a boxing coach for NBA stars.

Houston boxing coach Mark Owens became an extension of the Rockets' NBA strength and conditioning staff by working with coach Ime Udoka and guard Fred VanVleet.

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