Callum shares his experience from the Liverpool game.
When I was mascot I got to meet all of the Sunderland players in the changing room.
My favourite part of being a mascot was walking out of the tunnel with the players at 2.55pm with the music playing and hearing the noise of the crowd.
Before the game I got changed into my strip, got the players autographs and played football with the other mascots and Samson and Delilah.
I liked meeting Samson and Delilah because they are the club's mascots and make everyone laugh.
I would like to thank everyone at Sunderland AFC for making this a very special day for me. It was everything that I dreamed it would be.
I have friends in Rhodes, Greece who gave me the nickname 'Cattermole' because I support Sunderland.
When I see them in July I will proudly wear my strip.