[4] Sanon made his professional debut for Dnipro on 2 October 2016, scoring two points in two minutes against BIPA Odesa, in the top-tier level league in Ukraine, the Ukrainian Basketball SuperLeague.

[2] His season debut came on 27 September 2017 against Demir İnşaat Büyükçekmece in FIBA Europe Cup's 2017–18 qualification rounds, playing 56 seconds and recording no statistics.

[8] On 15 October 2017, with second division Dnipro-2, Sanon recorded 33 points, four rebounds, and eight assists, en route to Eurobasket.com Higher League Player of the Week accolades.

[11] On 13 January 2018 Sanon signed a four-year contract with Petrol Olimpija of the Premier A Slovenian Basketball League (SKL).

[15] He notched a career-high 23 points vs. Helios Suns Domžale, in a Slovenian SKL game on 13 February, shooting 4-of-7 from the three-point line.

[22] On 4 April 2018 Sanon announced his intentions to enter the 2018 NBA draft, where ESPN projected him to be a "strong draft-and-stash candidate.

[13] Entering the event as a little-known prospect, even in his home country, his unexpected success in Slovenia catapulted him into NBA draft consideration.

[3] Sanon is a fan of the Denver Nuggets of the National Basketball Association (NBA) and admired Emmanuel Mudiay during his stint with the team.