[1] Washington finished his senior season averaging 16.7 points, 10.0 rebounds, three assists, and three blocks per game for NCA.

[citation needed] Following his high school senior year at National Christian Academy, Washington was rated as a three-star prospect on Rivals.com.

[2] He chose to attend Virginia Tech, who had not reached the NCAA tournament since the 1995–1996, and play for newly acquired head coach Seth Greenberg.

His best statistical game came against Mount Saint Mary's University where he made eight of ten field goals, scoring 24 points.

The Hokies faced a 13-point deficit with just over eight minutes left to play, but came back to win 54–52, keyed by a running bank shot by Washington with 46 seconds remaining.

VT was selected for the NIT and reached the quarterfinals, defeating Morgan State 94–62, and UAB 75–49 before losing to Ole Miss 81–72.

He played in Israel for the defending champion Hapoel Holon in the 2008/2009 season, with whom he won the Israeli Basketball State Cup.

Deron played for the Detroit Pistons in the 2009 Summer League to compete for a spot on the roster.

On February 18, 2018, Washington went to win the 2018 edition of the Italian Basketball Cup with Fiat Torino by beating Germani Basket Brescia 69–67 in the Finals.

[12] The 2019–20 season suffered the interruption due to the COVID-19 pandemic and Washington did not play with any team until the end of the 2020 year.