Ritchie scored in the 57th minute of the game at St James's Park, making it 3-0 to the home side.
He received the ball from Jonjo Shelvey in acres of space, about 20 yards out. He then struck a nice low shot towards the left post, which proved too much for Fraser Forster to stop. The goal sealed his side's key victory over Southampton, as the 'Magpies' fight to avoid relegation.
You can check out the goal here:
10 March 2018