His achievements include: Upon graduating from Lely High School, Witten was given a wildcard to the USTA Pro Circuit event in Seminole, Florida, where he reached the semifinal.

Upon graduation from the University of Kentucky, Witten was given a lucky loser entrance into the ATP event in Indianapolis, Indiana where he lost in the first round to Andy Murray.

He finished the year strong by reaching the semifinals of USTA Circuit events in Waco, Texas, and Honolulu, Hawaii.

He also attempted to qualify for ATP events in Delray Beach, Florida, Newport, Rhode Island, Indianapolis, Indiana, and Cincinnati, Ohio.

Witten made his main draw Grand Slam debut when he and Phillip Simmonds partnered in doubles at the US Open.

Nearly a year and a half since his last title, Witten won his seventh championship at the USTA Pro Circuit event in Tulsa, Oklahoma, where he defeated Donald Young in the final.

Witten won the Metzger Tournament at Colonial,[3] and the 43rd annual City of Naples Tennis Championships at Cambier Park.

[5] Witten played in the USA F16 in Tampa, Florida, and lost in the semi-finals to Tennys Sandgren after beating Rhyne Williams in the quarter-finals.

His groundstrokes are technically sound on both forehand and backhand, he hits the ball extremely early which creates great power, depth and consistency.