PITTSBURGH -- Pittsburgh Mayor Luke Ravenstahl and San Diego Mayor Jerry Sanders have agreed to the terms of a friendly wager for this Sunday's AFC Divisional playoff game between the Steelers and Chargers.

If the Steelers beat the Chargers, Ravenstahl will send Sanders a Steelers' jersey and winter cap, and a pair of skis.

Sanders must then return a photo of himself wearing the Steelers' gear and holding the skis at the Sea World Penguin Encounter.

If the Chargers win, Sanders will send Ravenstahl a pair of Chargers' swim trunks and a jersey, and a surf board donated. Ravenstahl must then return a photo of himself in the Chargers' gear, standing with the surfboard in front of one of Pittsburgh's famed three rivers.

"I'm sure Pittsburgh fans will appreciate Mayor Sanders decked out in Steelers gear," Ravenstahl said. "On his way back from the Penguin Encounter, maybe he can stop at one of San Diego's Steelers' bars and watch us in the AFC Championship game."