And despite playing back-to-back games in the heat, Warriors made it an unbeaten night with a 27-14 victory over Bath Rugby to book a place at Finals Day at The Recreation Ground next Friday evening.
"I think tonight goes down to the new Worcester," said Hewitt. "I think the boys were magnificent, we showed lots of character and worked particularly hard.
"People got behind each other and worked for each other and that was great to see. That is what makes tonight so special.
"Everyone contributed and we tried to get everyone on the field, we looked to swap the team around because it is a tough tournament with back-to-back games. Every player played and so that is outstanding."
Captain Richard de Carpentier was named man-of-the-tournament but Hewitt was keen to spread the plaudit across his squad.
"RDC and people like Paul Hodgson were just outstanding. All the youngster put their hands up too so it was a great night for us. Hopefully this is the start of things to come.
"For me the most important thing was the character we showed, we showed some real character all night.
"We know look forward to Finals Day and another night of Sevens rugby at the Recreation Ground. I'm sure it will be another great spectacle and I hope as many of our fans as possible come join us."