AT SAN JOSE STATE: In his fourth season with the Spartans...2016, 2017 and 2018 Golden Coast Conference All-Academic team...2016, 2017, 2018 and 2019 ACWPC All-Academic Team award winner.
2019: Played in 27 matches...Recorded four goals and 10 assists...Recorded 14 steals.
2018: Played in 24 games...Recorded eight goals and 1 assist...Had four steals this season...Season-high two goals against Southern California on October 7.
2017: Played in all 28 games…Recorded 20 goals and 18 assists for the season…Had 18 steals on the year… Season high three goals against #15 Cal Baptist on October 21, 2017… Caught momentum at the Julian Fraser Memorial Tournament where he was second in points with 13; Had seven goals and six assists… Had most sprints for the Spartans with 24 winning 11.
2016: Played in 27 out of 28 games... Scored a career-high four goals on November 11, 2016 against #5-Pacific...His four goal performance was part of a streak in which he scored seven goals in three games to close out the season... Scored 12 goals and recorded three assists on the year... Ended the year with a 7-5 sprint record.
HIGH SCHOOL: Graduated from Glyn High School in Epsom, England.
MORE ON ASHLEY: A kinesiology major...Has one older brother, Kieran... Played club water polo for Crystal Palace Beacon (Coach Nick Buller)... Competed for Great Britain youth national teams at the U17 and U19 levels... Part of the 2014 Great Britain U19 team that finished sixth at the European Qualifying Tournament and third in the Slowianka Cup...Parents are Richard and Lee Castle.
| Season | GP | Goals |
| 2016...FR | 27 | 12 |
| 2017...SO | 28 | 20 |
| 2018...JR | 24 | 8 |
| 2019...SR |
27 | 4 |
| Career | 106 | 44 |