Due to the slow start, his handlers were often criticized for pushing him too fast during the early stages.

He won the Easter Bowl 14s and 18s titles in 2003 and 2004 and was named as Davis Cup practice partner for the quarterfinal tie against Spain in 2007.

Young won the Australian Open junior title at age 15 to become youngest-ever and first African-American man to be ranked No.

In July 2007, Young won the Junior Wimbledon title, beating top seed Vladimir Ignatik in the final.

It was against heavily favored opponent Richard Gasquet, who had fallen ill during the tournament and officially withdrew after morning practice.

Young defeated Sam Warburg and Alejandro Falla in the first and second rounds, respectively, before losing in a tough three-set match to Jonas Björkman.

Although the final set was tied 4–4, with the help of two key calls overturned on challenges in the last two games, Blake won.

Young won his first three matches at the Charlottesville (VA) Challenger against Vincent Spadea, Kevin Anderson, and Dominic Inglot.

Young received a wildcard into the main draw of the U.S. Clay Championship, but lost to Kevin Anderson in the first round.

Young received a wildcard into the Baton Rouge Challenger and defeated Tatsuma Ito in the first round but lost to Go Soeda in the second.

Young then defeated Ryler DeHeart and Cătălin Gârd, he lost to Ryan Sweeting in the semifinals.

In the first round of the Atlanta ATP Tournament, Young defeated Dudi Sela, but then lost to Kevin Anderson.

Young defeated Stéphane Robert in the first round in New Haven, before losing to Juan Ignacio Chela in three sets.

Young and partner Robert Kendrick won the doubles championship at the Virginia National Bank Challenger in November.

At the Indian Wells Masters 1000 event, he defeated his highest-ranked opponent to-date, Andy Murray (No.

He advanced to the third round in a Grand Slam tournament for the first time in his career by defeating Juan Ignacio Chela in straight sets.

14 Gaël Monfils in a come-from-behind three-setter, before losing to Andy Murray in his first ATP final at the PTT Thailand Open.

Young won back-to-back ATP Challenger tournaments at Napa Valley and Sacramento during late September and early October.

Young represented the United States in a first round Davis Cup tie against Great Britain.

He played one rubber and lost to Andy Murray in straight sets on clay inside Petco Park.

Young made it to the third round of the French Open, eventually losing in five sets to Guillermo García-López.

Young made it to the semifinals of the Washington Open losing to the top ranked Canadian Milos Raonic.

At the US Open, Young became a darling of the American fans en route to matching his 2011 performance by reaching the round of 16.

[17] He then lost to fifth-seeded Stan Wawrinka in four sets, thus failing to advance to the quarterfinal stage, which would have marked a new career-best performance at a major.

[18] Prior to his final match of the tournament, some of Young's shoes reportedly went missing from his locker inside the Billie Jean King National Tennis Center.

[19] 2016 was an average year for Young with his best performance coming at the Hall of Fame Open with a semifinal appearance.

He lost in the first round to eventual finalist, Juan Martín del Potro, in straight sets.

646, he entered qualifying also at the 2022 Atlanta Open as a wildcard where he defeated eighth seed J. J. Wolf, before losing in the second round to Dominik Koepfer.

Young played his last matches at the US Open partnering Taylor Townsend in mixed doubles,[21][22][23] where the duo reached the final.

[26] He paired up with Fabrice Martin in men's doubles for the majority of the season, helping the Freedoms earn a No.