Story highlights Recall involves frozen hash browns sold under the Harris Teeter and Roundy's brands

McCain Foods USA says potatoes may have pieces of golf balls in them

(CNN) You have an early-morning golf match. You make coffee and contemplate the optimal breakfast to help you hit the ball straighter and calm those first-tee jitters.

For now, skip frozen hash browns sold in nine states under the Harris Teeter and Roundy's brands. The potatoes may contain pieces of golf balls, according to the hash brown maker.

McCain Foods USA's recall notice on the US Food & Drug Administration site says the hash browns could be "contaminated with extraneous golf ball materials" that "may have been inadvertently harvested with potatoes used to make this product."

"Consumption of these products may pose a choking hazard or other physical injury to the mouth," says the notice of the voluntary recall.

There have been no reported injuries, according to the company.

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