Player history

2008 - 16-year-old Sandgren made a debut in USA F15 Futures, winning one match

2009 - Quarter-final in Dominican Republic F1 Futures and a Challenger debut in Lexington

2010 - 2 Futures wins from 5 tournaments

2011 - Missed the first 6 months of the season and he won back-to-back Futures in Illinois in July and August

2012 - 4 Futures titles and 3 quarter-final results in Challengers, in Winnetka, Sacramento, and Knoxville. Finished the season in the Top 250

2013 - Challenger title in Champaign with 2 semi-finals. Futures final in Canada

2014 - Tennys was sidelined for 6 months and he finished the season with just 4 Challenger wins, dropping out fro the Top 600

2015 - 2 Futures titles from 6 finals and Challenger semi-final in Tallahassee, losing to Frances Tiafoe

2016 - 3 Futures titles from 4 finals, losing the first to Denis Shapovalov in Memphis. Challenger final in Columbus at the end of the season, with a semi-final run in Columbus

2017 - Challenger title in Tampere and an ATP debut in Houston, losing to Ernesto Escobedo. Tiafoe beat him in the final of Sarasota Challenger and he won the title in Savannah 2 weeks later, conquering the USTA Roland Garros Wild Card Challenge and a wild card for the Roland Garros. Sandgren toppled Nick Kyrgios in Washington after scoring his first ATP win against Soeda, falling in the third round in 2 tight sets against Zverev. He reached 6 quarter-finals in the last 7 Challengers he played, advancing to the title match in Tiburon and Charlottesville, and the semi-final in Las Vegas. His first year-end Top 100 finish