Picking up the ball midway through the opponent's half, the Saints captain drifted to the left, rode the challenge of Curtis Davies and ghosted past Ahmed Elmohamady, before slotting home right-footed past Steve Harper from an acute angle.
"I am not surprised at all," Pochettino said. "Ever since we arrived in January I saw how well he trains every day, how hard he works every day.
"Little by little he is showing the amazing football he has inside. He has a great talent and is an amazing player."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball