The field house and outdoor bar at the Ciociaro Club caught fire Wednesday morning.
Megan and Matt Janisse, who lease this building from the club, got the call just before 9:30 a.m. and rushed to the scene.
Tecumseh Fire is still trying to determine if a lighting strike could be to blame. Sever weather was moving through Windsor-Essex at the time. Environment Canada had issued a severe thunderstorm warning at about 7:20 a.m.
The field house services the outdoor sports facilities at the club.
Baseball games were rained out Wednesday morning, so no one was near the field house at the time of the fire.
Tuesday night games have been cancelled.
Damage was done mostly to the office area, where the electric panel is.
The Janisse couple recovered its safety deposit box but found burnt cheques and Matt's wedding band inside.
Damage is estimated to be between $10,000 and $15,000.
Windsor is the lightning capital of Canada, according to Environment Canada. However, the CN Tower in Toronto is the object that gets struck by lightning the most in Canada.
In 2012, Harrow was the municipality with the highest number of days of lightning strikes, on average, in the country, based on a 10-year average. Lightning strikes there 35.9 days a year.
Last year, Environment Canada meteorologist Peter Kimbell called Harrow "close enough" to Windsor to lump the two together as a single region that leads the country in lightning strikes.