The annual sister-city tennis challenge between Whitehorse and Juneau will have more at stake this year than just a silver cup.

The mayors of the two cities have agreed to a friendly wager on the outcome of the Capital Cup.

Whichever city wins, the mayor of the other city has to take a photo wearing a ball cap or T-shirt from the winning city.

“Best of luck to all those participating in the Capital Cup tennis tournament which will be held in Whitehorse next week,” Whitehorse Mayor Dan Curtis said in a press release.

“The tournament is a fun and active way to celebrate the relationship between our two northern sister cities, and I look forward to seeing Mayor Sanford of Juneau sporting the Whitehorse shirt.”

Over the three-day tournament, players from each capital city will face off in singles and doubles matches.

Each game won counts as a point for the player’s city.

The city with the most points gets to keep the trophy and gets bragging rights until the next tournament.

This year’s Capital Cup will be held July 10 to 12 in Whitehorse at the Mount McIntyre tennis courts.

The public is welcome to watch matches, and if any Whitehorse player would like to compete, they are asked to email tennisyukonprograms@gmail.com.

The deadline to enter is July 8 at 5 p.m.

Juneau has emerged victorious from the last two Capital Cup tennis tournaments.

Juneau won the 2014 event 195-158, and the 2013 tournament by a score of 318-229.

The last time the Yukon won the event was in July 2012.