So far he has celebrated nine single and nine double victories on the ITF Future Tour . On the ATP Challenger Tour he has won six doubles tournaments a. a. in 2012 the tournament in Sacramento and in 2013 that in Tallahassee . On February 11, 2013, he broke through the top 150 in the world rankings in doubles for the first time and his highest place in singles was 41st in January 2019.
Controversy over right-wing extremist ideas
As part of Sandgren's successful performance at the Australian Open 2018 , where Sandgren only failed in the quarter-finals, a controversy arose over Sandgren's political attitudes. Sandgren had repeatedly forwarded messages on Twitter from well-known activists of the racist alt-right movement, such as Sebastian Gorka , over a long period of time . Various tweets from Sandgren, around 2,000 in total, had been deleted the morning after his round of 16 victory over Fabio Fognini . Sandgren said he did not support right-wing extremist ideologies and would "only find some content interesting". Among the deleted tweets is a comment written by Sandgren himself, in which Sandgren expressed homophobic thinking: "I stumbled into a gay bar last night ... my eyes are still bleeding".