He said it was “coached brilliantly” and they also possessed a huge offensive line.

“They rep it a lot, it is a difficult thing to train so they rep it weekly in games – they are always scoring off it or they are making yardage off it,” said Richie.

“You can always add 1% to it and try and fine tune it slightly but that play has been around for a while and they are excellent at it.”

In addition to his coaching work, Richie estimates his tackling equipment is now used by 20 out of 32 teams in the NFL – including the Eagles.

“It is just great that a Super Bowl winning team is using your technical training equipment to make themselves slightly sharper,” he said.

However, he said he could take “very little” of the credit for their triumph.

“You can always add 1% – it is not just the Eagles there are a number of other teams that I am involved with as well,” he said.

“But at that level 1% can sometimes have a major impact.”