2020-21: Went 5-1 in singles, including 5-0 in dual matches, all at No. 1, and 3-0 in Liberty League play ... First on team in singles wins ... Qualifier for NCAA Singles Tournament ... Lost 6-3, 6-4 in first round ... Ranked No. 20 in nation and No. 6 in Northeast Region in final ITA Spring Ranking ... Played No. 1 doubles ... Was 5-1 overall and 5-1 in dual matches, all with Andrew Imrie ... Went 3-0 in conference play ... First on team in doubles wins ...Duo ranked No. 22 in nation and No. 5 in Northeast Region in final ITA Spring Ranking ... Liberty League Singles Performer of the Week twice ... Doubles Team of the Week twice ... All-Liberty League First Team singles ... All-Liberty League First Team doubles (Imrie) ... Liberty League Player of the Year ... ITA All-America ... Liberty League All-Academic ...Â
2019-20: Went 12-3 in singles, including 4-0 in dual matches, all at No. 1, and 1-0 in Liberty League play ... First on team in singles wins ... Won ITA Regional Championship title, earning All-America ... Competed in national ITA Cup ... Ranked No. 9 in nation and No. 3 in Northeast Region in final ITA Fall Ranking ... No. 8 and No. 3 in final Spring Ranking ... Was 9-4 in doubles, including 4-0 in dual matches and 1-0 in conference, all with Andrew Imrie ... First on team in doubles wins ... Competed in national ITA Cup, earning All-America ... Duo ranked No. 9 in nation and No. 3 in Northeast Region in final ITA Fall Ranking ... No. 11 and No. 4 in final Spring Ranking ... Liberty League Singles Performer of the Week three times ... Doubles Team of the Week three times ... ITA Most Improved Senior award ...
2018-19: Captain ...
 Went 13-10 in singles, including 8-8 in dual matches, all at No. 1, and 7-1 in Liberty League play ... First on team in singles wins ... Listed 45th in nation in final ITA Ranking ... Was 13-9 in doubles, including 10-7 in dual matches and 6-2 in conference ... Second on team in doubles wins ... Played primarily with Andrew Imrie (9-7) ... Duo listed 20th in nation in final ITA Ranking ... Liberty League Weekly Honor Roll three times ... Liberty League Singles Performer of the Week once ... Liberty League Doubles Team of the Week with Imrie once ... All-Liberty League First Team singles ... All-Liberty League First Team doubles (Imrie) ...Â
2017-18: Went 19-6 in singles, including 14-4 in dual matches, all at No. 1, and 6-2 in Liberty League play ... Listed 45th in nation in final Oracle/ITA Ranking ... Was 21-7 in doubles, including 15-5 in dual matches and 6-2 in conference ... Played solely with Andrew Imrie ... Duo listed 22nd in nation in final Oracle/ITA Ranking ... Liberty League Weekly Honor Roll twice ... Liberty League Singles Performer of the Week six times ... Liberty League Doubles Team of the Week with Imrie four times ... All-Liberty League First Team singles ... All-Liberty League First Team doubles (Imrie) ... ITA Scholar-Athlete ...
2016-17: Went 12-11 in singles, including 8-9 in dual matches and 3-3 in Liberty League play ... Played at No. 1 (7-7) and No. 2 (1-2) ... Was 21-10 in doubles, including 13-6 in dual matches and 6-1 in conference ... Played No. 1 (10-6) and No. 2 (3-0) ... Two playing partners, including Zack Ebenfeld ... Tandem was 21-9, including 13-6 in dual and 6-1 in league contests ... Won ITA Regional Tournament to become first National All-Americas in program history ... Ranked 45th in singles and ninth in doubles (Ebenfeld) ... ECAC Rookie of the Month for October ... Liberty League Singles Performer of the Week once ... Liberty League Doubles Team of the Week with Ebenfeld five times ... Rookie of the Week three times ... All-Liberty League First Team doubles ... Second Team singles ...Â
High School: Four years of varsity tennis ... Captain as senior ... 2016 Player of the Year in SAC and by North Suncoast ... State Champion in 2015 ... Won 264 straight games in sophomore season ... All-Conference four times ... School's Athlete of the Year as senior ... Team won conference and district championships every year ... State Champions twice ... National Champions in 2015 ... Honor Roll every year ... Sophomore of the Year nominee ... FBLA District First Place Award three times ... AP Scholar ... Future Business Leaders of America ...Â
Personal: Information Technology and Web Science undergraduate major ...
 Master's in Business Analytics ...
 Rensselaer's 2016-17 Male Freshman Athlete of the Year ... Accepted full-time position in Career Foundations Program at Broadridge in Newark, N.J. ... Son of Paola Sanchez and Roberto Castillo ... Both parents played college tennis at Freed-Hardemann University ... Uncle played in college and professionally.
What Makes Rensselaer So Special: "Rensselaer understands that athletes sometimes struggle managing both athletics and academics. There are always people who are there to help you succeed. I am happy that I was able to support and grow friendships with athletes from other teams throughout my time here at RPI." - April 2021
