Santa Clara University

AT SANTA CLARA: Entering his first season with the Broncos in 2026-27 after transferring from Kansas State. 

AT KANSAS STATE: Appeared in 64 career games with 18 starts over two seasons in Manahattan ... Shot 35.9 percent from the floor, 32.3 percent from beyond the arc and 84 percent from the charity stripe to tally 406 total points ... Scored in double figures 14 times with all but one instance coming during his sophomore campaign ... Was named to the 2025 Academic All-Big 12 Rookie Team and 2026 Academic All-Big 12 Winter Team. 

AS A SOPHOMORE (2025-26): Started the final 14 games of the season and made 16 total starts while appearing in all 32 games ... Averaged 10.3 points per game on 40 percent shooting, including a 35.2 percent mark from 3-point range ... Set a Kansas State record for scoring improvement with a plus-7.9 scoring increase from his freshman season (2.4 ppg) ... Was the team's fourth-leading scorer and ranked third in field goals made (116), 3-pointers made (56) and assists (57) ... Reached double-figure scoring 13 times with a pair of 20-point performances ... Logged a career-high 22 points against Bowling Green on Dec. 1, 2025 and dropped 20 points on Jan. 20 in K State's conference opener against Utah ... Also had 19-point efforts against Bellarmine (11/8) and Mississippi Valley State (12/8) ... Knocked down at least one trey in 27-of-32 games played.

AS A FRESHMAN (2024-25): Played in 32-of-33 games as the lone freshman on the roster ... Drew starts against Drake and Wichita State ... Averaged 2.4 points and wa s 22-for-25 at the free throw line ... Season-best point total was 17 against Arkansas Pine-Bluff (12/1) where he knocked down 5-of-9 3-point attempts ... Played in all but one of the team's conference games. 

HIGH SCHOOL: A consensus four-star recruit by all major recruiting services and a member of the Rivals150 ... Ranked as a top-15 point guard nationally and was the No. 1 prospect for the state of Kansas according to all services, including ESPN, 247Sports, Rivals and On3 ... Played his senior season at prep powerhouse Sunrise Christian Academy in Kansas after prolific career at Bartlesville High School in his home state of Oklahoma ... Led Sunrise Christian Academy in scoring (13.2 ppg) on 37 percent shooting, including 37 percent shooting from 3-point range and a EYBL Scholastic League-leading 97 percent from the free throw line (32-of-33) ... Logged eight double-figure scoring games as a senior with a high of 26 vs. IMG Academy and a double-double of 14 points and 10 rebounds against Legacy Early College ... Prior to making the move to Kansas, he left Bartlesville High as the school's all-time leading scorer with 1,594 points, an average of 23.7 points per game over 67 contests ... Eclipsed 1,000 points over his first two seasons ... Averaged 5.6 rebounds, 3.7 assists and 1.2 steals for his three-year career ... Averaged 22.3 points, 6.0 rebounds and 4.0 assists as a junior in 2022-23 with a season-high 42 points against Sapulpa ... Was a finalist for the Tulsa World 2023 State Player of the Year Award and was on the watch list for the USA Today HSSA Boys Basketball Player of the Year ... Was a two-time Tulsa World All-State First Team selection and two-time First Team All-Frontier Valley Conference as both a sophomore and junior ... Averaged 24.7 points as a sophomore and 23.7 points as a freshman. 

CLUB/PRO: Has extensive international experience, winning gold medals with USA Basketball at the 2021 FIBA Americas U16 Championship and 2022 FIBA U17 World Cup ... Averaged 10.7 ppg to help Team USA to a perfect 7-0 run at the 2022 FIBA U17 World Cup in Malaga, Spain ... Logged 12 points in both the semifinal vs. Lithuania and in the gold medal game against Spain ... Played alongside the likes of Cooper Flagg, Asa Newell and DJ Wagner at the U17 World Cup. 

GET TO KNOW DAVID: Originally from Houston, Texas ... Parents are Nate and Hilda Castillo, who migrated from Honduras to New York ... Has three siblings - Letricia, Antonio and Gloria ... Sister, Leticia, was a three-time team captain and earned honorable mention All-Mountain West honors as a member of the Air Force Academy women's basketball team.