The Cincinnati, Ohio, native attended Winton Woods High School with whom he led the Fort Ancient Valley Conference in scoring as a senior with 21 points per game, adding 5.2 assists.

[2][3] In July 2011, Christon committed to Xavier, playing in the Atlantic 10 Conference of the NCAA Division I, but would join the team in 2012, first attending prep school Brewster Academy along with fellow recruit Jalen Reynolds.

[3] Christon, rated a four star recruit by Rivals.com,[4] chose Cincinnati college Xavier over reported offers from Illinois, Providence and Georgetown.

[4][8] During his high school career, Christon also played AAU basketball for Club Ohio, participating in the Under-17 National Championship,[9] and later on for the Cincinnati Knights.

After missing the first game of the season due to a cut in his elbow getting infected,[11] he made his Musketeer debut against Butler on 13 November 2012, contributing 2 points and 8 assists.

Despite speculation that he would withdraw his entry, Christon hired an agent and submitted the paperwork in April 2014, thereby ensuring he wouldn't return to Xavier for his junior season.

[25] Christon did not take part in the Thunder's training camp and was instead incorporated into the team's NBA Development League affiliate, the Oklahoma City Blue.

[28] His good form continued during the season and led him to participate in the D-League All-Star Game in February 2015, contributing 10 points for the Prospects.

[32] He performed well at the Orlando event, top-scoring in the fifth place game win over the Los Angeles Clippers with 23, for tournament averages of 15.6 and an unrivaled 6.8 assists.

[46] In October 2018, Christon led Be'er Sheva to the 2018 Israeli Basketball League Cup Final, where they eventually lost to Maccabi Rishon LeZion.

On November 24, 2018, Christon recorded a season-high 31 points, shooting 5-of-11 from three-point range, along with three rebounds and four assists in an 88–89 loss to Hapoel Jerusalem.