Produced a triple double of 20 points, 10 rebounds, and 11 assists in the Class A district title game. He grabbed double-digit rebounds in 11 games as a senior.
A finalist for the Hal Schram Mr. Basketball award in Michigan, Johnson was a first team all-state selection and was the Ann Arbor News Washtenaw County Player of the Year. He was ranked No. 55 nationally by 247Sports.com, 56th by Rivals.com, 62nd by Scout.com and was among the nation’s top 25 power forwards by ESPN.
Averaged 13.8 points and 8.5 rebounds as a junior in helping Ypsilanti to a 20-5 record and the school’s first regional championship since 1981. He averaged 19.7 points and 15.3 rebounds in three district games before Ypsilanti reached the state quarterfinals, where Johnson totaled 15 points and 12 boards. He was a first-team all-county selection as a junior.
In 2013, he attended the Lebron James Skills Academy and Adidas Super 64. Johnson attended the Pangos All-American Camp in 2014 and was awarded the Mario Ellie Award and was also named to the "Cream of the Crop" Top 30.
He joined the Louisville Cardinals men's basketball team for the 2014-15 season. During his three-year tenure with the Cards, Johnson made a total of 88 appearances, starting in 22 games his sophomore season and in 26 as a junior. Johnson averaged 5.2 points and 3.8 rebounds a contest during his Louisville career. His best season came as a junior when he scored 8.0 points a game, while scooping up 5.8 rebounds in 20.5 minutes per game. His per 40 minutes numbers were 15.6 points and 11.3 rebounds. Johnson finished 7th in the ACC and 102nd nationally in offensive rebounds per game. In late April 2017, he announced his decision to skip his senior year to start his professional career and declare for the 2017 NBA draft. However, he went undrafted.
After going undrafted in the 2017 NBA Draft, Johnson signed a training camp deal with the Chicago Bulls. He was waived on October 14 as one of the final preseason cuts. On November 4, 2017, Johnson was included in opening night roster of the Windy City Bulls. On March 24, 2018, the Chicago Bulls announced that they had signed Johnson, but was waived on the next day. On October 20, 2018, the Iowa Wolves announced that they had acquired the returning rights to Johnson and Jarell Eddie from the Windy City Bulls for the returning rights to JaKarr Sampson and the draft rights to the No. 38 overall pick in the 2018 NBA G League Draft, Mike Amius.
Iowa Wolves (2019)
On January 11, 2019, Johnson was added to Iowa Wolves to their roster. In 21 games played for the Wolves, he averaged 8.7 points, 4.3 rebounds and 1 assist per game. On July 1, 2019, Johnson joined the Indiana Pacers for the 2019 NBA Summer League.
On September 4, 2019, Johnson signed with Hapoel Holon of the Israeli Premier League for the 2019–20 season. On November 2, 2019, he parted ways with Holon after appearing in five games.
Second stint with Iowa Wolves (2019–present)
On November 20, 2019, the Iowa Wolves announced that they had acquired returning right of Johnson.
Personal life
His mother Janetta played basketball at the University of Wisconsin, is the first woman to lead in the nation in blocked shots, men and women at the same time during her tenure at Wisconsin, she still holds the single-season record for blocked shots at Wisconsin. With 130 Blocks in one season. She also spent four years playing professionally in Portugal.
