Knights will face Premiership outfit Newcastle Falcons this Saturday at Castle Park (2.30pm) in a hastily-arranged pre-season friendly.
The Castle Park club will also travel to face National One side Tynedale on Saturday, August 30.
Clive Griffiths moved swiftly to arrange not just one but two new dates after Leicester Tigers pulled the plug on their proposed home friendly with Doncaster next Friday.
Newcastle tickets: Adults £5, children free (when accompanied by an adult).