Born in New Brunswick, New Jersey, Farrell grew up in Point Pleasant Beach, New Jersey and attended Point Pleasant Beach High School. He committed to Boston College as a senior. However, his plans changed when the college fired Steve Donahue as the basketball coach in 2014.[1] Instead, Farrell signed with Notre Dame in March 2014 because his grandfather Bob Farrell attended the school and frequently told stories of his time there.[2] Farrell was the Asbury Park Press 2014 boys basketball player of the year after averaging 19.5 points, 5.9 assists, 3.8 rebounds and 3.9 steals per game as a senior. He led Point Beach to a 29–2 record and the second consecutive Shore Conference Class B Central division title. Farrell scored 1,431 points and dished out 545 assists in his high school career.[3]
College career
Farrell joined the starting lineup for the postseason as a sophomore and helped the Fighting Irish reach the Elite Eight.[4] He averaged 14.1 points and 5.4 assists per game as a junior while shooting 42 percent from 3-point range as Notre Dame finished 26-10 and advanced to the NCAA Tournament's second round.[5] He was an All-ACC Honorable Mention as a junior. Farrell missed several games in early January 2018 with a right ankle sprain, leaving Notre Dame without their two best players since Bonzie Colson fractured his foot.[6] On February 17, Farrell scored a career-high 37 points and made a school-record 10 3-pointers with seven assists to help Notre Dame defeat Boston College 84–67.[1] He made a long 3-pointer to give Notre Dame the lead with eight seconds remaining in a win against Wake Forest on February 24 and finished with 21 points.[7] In the game, Farrell surpassed the 1,000 point mark for his career.[2] At the conclusion of the regular season, Farrell was named to the All-ACC Third Team.[8] As a senior, Farrell averaged 16.3 points and 5.3 assists per game. After the season, he signed with sports agent Keith Glass and participated in the Portsmouth Invitational Tournament.[4]
On January 15, 2020, the Northern Arizona Suns announced that they had acquired Farrell from the Austin Spurs for the returning right to Peter Jok.[16] He suffered a hip injury in late February and missed several games.[17] Farrell averaged 9.1 points, 2.4 rebounds and 5.0 assists per game.[18]