By Tim Jimenez

WILMINGTON, Del. (CBS) — It was a grand slam today for fans of a local minor league baseball team. The frigid blast means opening day tickets were going for mere pennies.

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A President’s Day promotion for the Wilmington Blue Rocks said that tickets would go on sale at a price based on this morning’s outdoor temperature in Wilmington.

So, tickets for their home opener, April 16th, were being sold this morning for a whopping “four cents a piece.”

Really?  General manager Chris Kemple says, absolutely.

“(We) put our opening day tickets on sale for the price of what the temperature was at eight o’clock in the morning.”

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And at that time, it was a blistering 4 degrees F. in Wilmington.

This is the second straight year the team is running this promotion, and it’s certainly a hit among fans.  Last year the tickets were priced at 20 cents each.

This morning, Kemple says, as of 9:30am they had sold more than 1,000 opening day passes, some fans even braving the single-digit temperatures to go to the ballpark ticket office in person.

He says they may have to clarify the rules for next year, since this year’s frigid temperature caught them a little bit by surprise.

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“Zero (degrees) would have been free tickets, and if it was negative degrees I’m not sure what we would have done.  I guess in theory we would have had to give money,” he says with a laugh.