Activity Sheffield's On Your Doorstep initiative for 11-16 year olds provides fun, structured and safe sessions at vulnerable times of the year, and sessions take place throughout the city.
Teams must be registered to enter, and this can be done at http://www.blastoff-sheffield.co.uk/.
The Open Weekend session will take place on Friday 23 July at Concord Sports Centre, from 6pm until 9pm, and is free of charge. For more information, contact Activity Sheffield on 0114 2053725, or via email.