The Black Cats played out a 2-2 draw with Crystal Palace at the Stadium of Light in the Premier League.
Former Sunderland star Gray was following the match, and he seems confident of his old club’s chances of survival in the English top flight.
The draw with Palace means that Sunderland are now 17th in the Premier League table.
Sam Allardyce’s side have picked up 24 points from 28 matches, as many as Norwich City, who are third from bottom in the standings at the moment.
The Black Cats are still very much in danger of getting relegated to the Championship at the end of the season.
However, with the likes of Newcastle United, Norwich, Swansea City and Bournemouth all in or around the relegation zone, Sunderland do have a chance of staying up.