When the NFL settled a class action brought on by its players in 2015, they set aside $1 billion to cover compensation over the next 20 years.
Not even three years into that period, they have already paid more than $500 million, with the total sum blown out to nearly double the original estimate.
Former NFL player Colin Scotts joins Cam Reddin with a warning to the major Australian codes that they cannot ignore the issue of concussion any longer.