Northampton say winger George North was not knocked out and was fit to play on after a mid-air tackle against Leicester.
Northampton Rugby Union
Adam Thompstone scores a try but is sin-binned soon after as Leicester overcome Northampton in a fierce East Midlands derby.
Northampton and England prop Kieran Brookes is banned for two weeks after being sent off during Friday's defeat by Newcastle.
Newcastle Falcons stun 14-man Northampton Saints at Franklin's Gardens, after Kieran Brookes is sent off for the hosts.
Audio & Video
Watch the story of Northampton Saints' player William West, who died days after sustaining injuries on the last day of the Battle of the Somme.