The 2013 Charlottesville Men's Pro Challenger was a professional tennis tournament played on hard courts. It was the fifth edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Charlottesville, United States between October 28 and November 3, 2013.
The 2014 JSM Challenger of Champaign–Urbana was a professional tennis tournament played on hard courts. It was the nineteenth edition of the tournament which is part of the 2014 ATP Challenger Tour. It took place in Champaign, Illinois, United States between November 10 and November 16, 2014.
The 2015 Tallahassee Tennis Challenger was a professional tennis tournament played on green clay courts. It was the 16th edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Tallahassee, Florida, United States between 27 April and 2 May 2015.
The 2015 Levene Gouldin & Thompson Tennis Challenger was a professional tennis tournament played on hard court. It was the 22nd edition of the tournament which was part of the 2015 ATP Challenger Tour. It takes place in Binghamton, United States between 20 and 26 July 2015.
The 2015 Kentucky Bank Tennis Championships was a professional tennis tournament played on outdoor hard courts. It was the twentieth (ATP) and eighteenth (ITF) edition of the tournament and part of the 2015 ATP Challenger Tour and 2015 ITF Women's Circuit, offering a total of $50,000 in prize money in both events. It took place in Lexington, United States, on 27 July–2 August 2015.
The 2015 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the twelfth edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Knoxville, United States between 8 and 15 November 2015.
The 2015 JSM Challenger of Champaign–Urbana was a professional tennis tournament played on hard courts. It was the twentieth edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Champaign, Illinois, United States between November 14 and November 21, 2015.
The 2017 U.S. Men's Clay Court Championships was a tennis tournament played on outdoor clay courts. It was 49th edition of the U.S. Men's Clay Court Championships, and an ATP World Tour 250 event on the 2017 ATP World Tour. It took place at River Oaks Country Club in Houston, Texas, United States, from April 10 through April 16, 2017.
The 2018 Oracle Challenger Series – Indian Wells is a professional tennis tournament played on outdoor hard courts. This tournament is part of the 2018 ATP Challenger Tour and the 2018 WTA 125K series. The first edition took place on February 26 through March 4, 2018 in Indian Wells, United States.
The 2018 Fuzion 100 Ilkley Trophy was a professional tennis tournament played on outdoor grass courts. It was the fourth edition of the tournament and was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Ilkley, United Kingdom, on 18–24 June 2018.
The 2018 Washington Open was a tennis tournament played on outdoor hard courts. It was the 50th edition and the 8th edition of the Washington Open. The event was part of the ATP World Tour 500 series of the 2018 ATP World Tour, and of the WTA International tournaments of the 2018 WTA Tour. It took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., United States, from July 30 to August 5, 2018.
The 2018 Stockton Challenger was a professional tennis tournament played on outdoor hard courts. It was the third and fourth editions of the tournament and was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Stockton, United States, on 1–7 October 2018.
The 2018 Charlottesville Men's Pro Challenger was a professional tennis tournament played on indoor hard courts. It was the tenth edition of the tournament which was part of the 2018 ATP Challenger Tour, taking place in Charlottesville, United States from October 29 to November 4, 2018.
The 2019 BNP Paribas de Nouvelle-Calédonie was a professional tennis tournament played on hard courts. It was the sixteenth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Nouméa, New Caledonia between 31 December 2018 and 6 January 2019.
The 2019 Cleveland Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Cleveland, United States between 28 January and 3 February 2019.
The 2019 Sarasota Open was a professional tennis tournament played on clay courts. It was the 11th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Sarasota, Florida, United States between 15 and 21 April.
The 2019 Tallahassee Tennis Challenger was a professional tennis tournament played on green clay courts. It was the 20th edition of the tournament and was part of the 2019 ATP Challenger Tour. It took place in Tallahassee, Florida, United States between 22 and 28 April 2019.
The 2019 Levene Gouldin & Thompson Tennis Challenger was a professional tennis tournament played on hard court. It was the 26th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Binghamton, United States between 22 and 28 July 2019.
The 2021 Delray Beach Open was a professional men's tennis tournament played on hard courts. It was the 29th edition of the tournament, and part of the 2021 ATP Tour. It took place in Delray Beach, United States between January 7 and January 13, 2021. Due to the COVID-19 pandemic, it was rescheduled from its original dates in mid February. Fourth-seeded Hubert Hurkacz won the singles title.
The 2021 Winston–Salem Open was a men's tennis tournament played on outdoor hard courts. It was the 52nd edition of the Winston-Salem Open, and part of the ATP Tour 250 Series of the 2021 ATP Tour. It took place at Wake Forest University in Winston-Salem, North Carolina, United States, from August 21 through August 28, 2021. It was the last event on the 2021 US Open Series before the 2021 US Open.
Noah Rubin 
