[1] As a senior, Hornsby was named team captain, and averaged 16.7 points, 8.3 rebounds and 2.7 assists per game.

[1][5] ESPN named him the 20th-best high school recruit in California, and Scout.com ranked him the sixth-best small forward on the West Coast of the United States.

[6] As a freshman in 2013–14, Hornsby averaged 3.7 points, 3.3 rebounds, 1.1 assists, and 0.6 steals per game, as he shot .362 from the field and .717 from the free throw line.

[1] As a junior in 2015–16, he averaged 7.8 points, 6.9 rebounds (7th in the Big Sky Conference), 1.6 assists, 1.2 steals, and 0.7 blocked shots per game.

[1] He graduated ranked among the top 20 players in school history in 12 statistical categories, including 3rd in rebounds (723), and 7th in steals (133).

[9][10] Hornsby has played in Israel since 2020 for Hapoel Be'er Sheva of the Israeli Basketball Premier League, at the forward position.