Damian Lillard's new team isn't the only major change in his life -- the Milwaukee Bucks superstar just filed for divorce from his longtime partner, Kay'La.
TMZ Sports has confirmed ... the 7-time All-Star officially filed docs in Oregon earlier this week.
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Dame and Kay'La go way back -- they first started dating as students at Weber State and were together ever since. They officially got married back in September 2021 and have three children.
According to Willamette Week, Dame's filing cited irreconcilable differences that "caused the irremediable breakdown of their marriage."
The report also points out the two appear to have been living separately for the past 10 months ... with Kay'La moving into a $2.7 million home in West Linn, while Dame remained at their $7.7 million pad in the same city.
There has been speculation for weeks ... with some internet sleuths noticing Kay'La had been absent from Damian's social media posts.
Dame did, however, give a special shoutout to Kay'La on Mother's Day earlier this year ... saying, "Takes a special person to wear all the hats that a mother does. I love you and I'm thankful to share what I’m most proud of with you!"