Rowan, the son of former NBA player Ron Rowan,[2] played high school ball at Lincoln Park High School in Midland, Pennsylvania and at Cardinal Gibbons in Fort Lauderdale, Florida.

As a sophomore, Rowan sank 53 threes in 25 games, pouring in 12.0 points and 3.7 boards per outing.

After the conclusion of the 2016-17 campaign, he opted to forgo the remaining two years of his college eligibility to launch his professional career and to enter the 2017 NBA draft.

[6] On August 3, 2017, Rowan signed a three-year deal with Serbian club FMP Belgrade.

On March 12, 2019, the Maine Red Claws of the NBA G League announced that they had acquired Rowan.