ESPN 100 shooting guard Ethan Thompson committed to Oregon State on Monday night.
The Beavers already had a strong connection to Thompson, whose father, Stephen, is an assistant coach under Wayne Tinkle, and whose older brother, Stephen Jr., is a sophomore guard for the Beavers.
"It would have been tough to turn down family," Ethan Thompson told ESPN.com.
Thompson said he also considered Syracuse, his father's alma mater, and Stanford before choosing the Beavers.
"On my official visit, it was really a family connection all around, on and off the court," Thompson said. "All the people they had me meet, from the president all the way down to the academic advisor and compliance people, they all want to see the players succeed."
Thompson, a 6-foot-4 shooting guard from Bishop Montgomery (California) High School, is ranked No. 51 in the ESPN 100. He averaged 10.8 points, 3.7 rebounds and 3.0 assists on the Nike EYBL circuit last spring and summer with the California Supreme program.
Tinkle guided Oregon State to the NCAA tournament last season in just his second season as coach; it was the school's first tournament appearance since 1990. Stephen Thompson Jr. played a key role in that run, averaging 10.6 points as a freshman.
Ethan Thompson will be the third coach's son to play under Tinkle at Oregon State, joining Stephen Jr. and Tres Tinkle (13.1 points per game, 5.4 rebounds).
"Coach Tinkle is a great coach, and he will make everybody compete for every single spot and every single minute played," Ethan Thompson said. "If I go in there and compete like my brother did, I can make an impact as a freshman.
"I feel like there should be no limits with us. We should be able to make deep runs into the tournament, and we shouldn't just settle for making the tournament."
Thompson is Oregon State's first commitment in the 2017 class.