Ruddock is delighted at the selection and believes there are other talents at Warriors that can also make the step up.
"We have the players that can achieve that status and go on to play for England," he said.
"It is difficult to name names because we have so many youngsters, but you have to say Miles Benjamin, certainly on last year's form, was knocking on the door of the Saxons. I am sure after his injury he will come back more enthusiastic than ever to get back to that form.
"I also believe Graham Kitchener is someone who can achieve that status. He is a fine prospect and he is only 19 so has time on his side. He has the size and skills for international rugby and, like Matt, is very dedicated to his game.
"Tom Wood has proved himself with the first team and has the size and skill level to reach that.
"You start to look through the squad and there are a number of youngsters who, if they can get regular rugby with Warriors, could knock on that door as well. People like James Collins too.
"We have a really good group of young players and hopefully Matt Mullan's elevation will inspire them and drive them to even greater efforts to try and achieve that kind of status."
Watch England star Matt Mullan at the home of the Warriors as we tackle Bucuresti Oaks!
Tickets on sale now from 01905 454183 or on matchday from the Warriors Box Office at Sixways Stadium.