Club Captain Ian Miller told BT Sport that he had ruptured his achilles tendon. He said:
I told the medical team to get me in a wheelchair, I just wanted to be out here with the boys."
More top news
The Chief Executive of Southend United has told ITV News Anglia that his players deserved to win promotion to League One at Wembley.
Some sunny intervals are possible initially this morning but cloud and patchy rain will gradually sweep in as the day goes on.
The final score was Northampton 24 - Saracens 29 at Franklin's Gardens.