The 16-year-old Wrightwood, California native joins the Western Conference cellar dwellar out of the club's youth academy.
At the age of 16 years, 8 months and 13 days, Calvert is the youngest player in club history, beating Marco Delgado's previous record of 16 years, 10 months and 17 days.
"Our Youth Development Program is extremely happy for Caleb to step up and move to the next level," said Chivas USA’s Youth Academy Director Sacha van der Most. "I think it’s well deserved as he has proved himself at the U16s and U18s levels this whole year and also by stepping up in the Reserve League games."
The player himself was delighted.
"I’m beyond thrilled. I never thought this moment will come this soon and this fast but I’m living my dream right now, and it’s the most incredible feeling anyone can have," said Calvert. "Hopefully I get adjusted and comfortable soon and from there I can start playing my game and doing what I do best, scoring goals.
"I feel honored to have coach [Jose Luis] Real as my coach. It’s obviously a very big deal and now I’m lucky enough to play under him. I think only good can come from it, so I’ll do the best I can, and work hard every single day to give everything I have for this team."