Nike Golf announced last week that some of its square-shaped drivers had excessive 'characteristic time' -- which means that the drivers stayed in contact with the ball too long.
Nike says consumers have from March 26 to April 30 to seek a free replacement driver.
Nike president Bob Wood said the USGA notified the company in February there might be a problem. He said Nike conducted its own investigation and found that during production of the drivers for consumers in the United States, Canada and Europe, a variance occurred that made the club fall narrowly outside the specifications.
Wood said a competitor told the USGA of potential problems with the Nike club, but he did not identify the company.
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