Rey Mysterio‘s son Dominik could soon follow in his father’s footsteps … because he officially started training to wrestle this week!

Finest City Wrestling in San Diego posted a photo Monday night after his inaugural session and wrote, “Tonight Dominik took his first steps towards a awesome journey with the help from his pops Rey Mysterio and Konnan at Battle U.”

Mysterio revealed back in November that his son was working to get his body into ring shape so that he could eventually begin training inside the squared circle.

Our sources tell us that for the first day, he did pretty damn good.

Stay tuned.