Lonzo Ball and Michael Porter Jr . believe they would have been forces to be reckoned with in the WNBA as teenagers ... with both NBA stars claiming they'd dominate against pro women's players before they were old enough to drive cars.

MPJ stopped by Lonzo's "Ball in the Family" podcast recently ... and at one point in their chat, the current Brooklyn Nets player brought up how A'ja Wilson said she could beat Knicks guard Josh Hart one-on-one. Getty

The convo then transitioned into how Patrick Beverly said a WNBA team could beat an NBA team's bench players ... which Lonzo wasn't buying.

"I mean this as respectfully as possible, but 9th-grade Lonzo Ball in the WNBA is going crazy," Ball said.

"In 9th grade, I was over six feet, and I'm dunking. I'm coming thro

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