The blast was so powerful that it demolished a building near the volleyball court. Police is still searching for more dead and wounded under the rubbles.
The suicide bomber detonated a vehicle as fans gathered to watch two teams face off in the town of Shah Hasan Khan, not far from the Taliban stronghold of South Waziristan.
According to police, the town was targeted because its residents have been supporting the Pakistani government’s efforts to suppress Taliban militants.
For several months, Pakistan's military has been battling the Taliban who use certain regions of the country as safe havens for their fight in Afghanistan and where they enforce Sharia.
In 2009, the Taliban have been responsible for several attacks that killed thousands of civilians.