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Russell Wilson has another champion in his family. The superstar NFL quarterback congratulated his sister, Anna Wilson, after her team Stanford University defeated the University of Arizona for the women's basketball national title on Sunday.

Brother and sister posed for photos with their mother, Tammy Wilson, after the game. Russell attended all of his sister's games at the NCAA championship tournament.

Russell shared an Instagram image of his 23-year-old sister holding the championship trophy.

He captioned the image:

"Drive. Will. Passion. Energy. You've earned it all through hard work, leadership, prayer, & immeasurable Faith. I Love You Anna Wilson. I Love You Champ. @awilly03."

His wife, Ciara Wilson, also congratulated her sister-in-law on Instagram:

"So beautiful. You deserve it all @awilly03," the 35-year-old singer wrote. "Dedication & Hard work pays off! National Champs! @stanfordwbb."

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(L-R): Russell, Ciara, Anna and her older brother Harrison Wilson pose at the 2018 ESPYS at Microsoft Theater on July 18, 2018 in Los Angeles.

Anna, who is 5-foot-9, is a fifth year shooting guard at Stanford, where she majors in art practice.

In an essay for ESPN last year, Anna hinted at sibling rivalry between herself and her high-achieving brother. She said they've "gotten much closer" as she matured.

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"I feel like his shadow, for me, has dissipated. I don't feel like I'm living in it as much as I was in the past. I feel like I'm very much my own person now, following my own path," she wrote.

The star quarterback, who won a Super Bowl ring with the Seattle Seahawks in 2014, cheered on Anna after Stanford squeaked past South Carolina 66-65 in the Final Four.

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