Waghorn was once of Sunderland himself and sent a message to the goalkeeper after he played at White Hart Lane on Saturday.
Pickford and co weren't able to prevent a 4-1 defeat but it still marked a historic occasion for the stopper.
Pickford's Premier League debut, of course, was bittersweet. As much hope as there is for the Sunderland youngster and his potential, the bottom line is he let in four goals - similarly to when he started against Arsenal in the FA Cup and saw three go past him.
Sam Allardyce will no doubt just write this game off and concentrate on the next one. Their opposition on Saturday aren't fourth in the Premier League for no reason.
Next up for Sunderland is a Premier League clash against Bournemouth - a far more winnable prospect for the Black Cats.
With home advantage, Big Sam will no doubt be relishing the chance to win another relegation six-pointer, whether Pickford plays that day or not.