The 41-year-old former MLB pro -- who will serve as a guest judge on Shark Tank
this fall -- gushed to ET's Nischelle Turner about what a great influence the triple-threat star has on his two daughters, Ella, 9, and Natasha, 12
. "Jennifer is one of the most brilliant business minds that I've ever met," Rodriguez said, praising Lopez. "She's the hardest working lady and, you know, I grew up with a single mother. I have two daughters. I am a big, big promoter of women equality."