|Country (sports)||United States|
|Born||July 19, 1993|
|Height||1.83 m (6 ft 0 in)|
|Plays||Right-handed (two-handed backhand)|
|Career record||22-38 (36.7% in ATP Tour and Grand Slam main draw matches)|
|Highest ranking||No. 99 (June 6, 2016)|
|Current ranking||No. 184 (21 June 2021)|
|Grand Slam Singles results|
|Australian Open||1R (2016, 2017, 2019)|
|French Open||2R (2016)|
|US Open||2R (2017)|
|Career record||0-4 (in ATP Tour and Grand Slam main draws)|
|Highest ranking||No. 304 (27 April 2015)|
|Current ranking||No. 922 (26 April 2021)|
|Grand Slam Doubles results|
|US Open||2R (2021)|
|Grand Slam Mixed Doubles results|
|US Open||1R (2017, 2021)|
|Last updated on: 27 April 2021.|
He won the boys' singles title at the 2011 French Open. Fratangelo is only the second American out of three to win the event, following John McEnroe in 1977 and preceding Tommy Paul in 2015. Fratangelo was a singles semifinalist at the 2017 Hall of Fame Tennis Championships.
Fratangelo began playing tennis at age three. and is named after tennis champion Björn Borg. His father, Mario, is his coach. Fratangelo attended St. John the Baptist School in Plum, Pennsylvania until the 8th grade when he moved to Naples, Florida for training reasons, and was an online student of Barron Collier High School.
Fratangelo won the boys' singles title at the 2011 French Open, beating Dominic Thiem in the final, 3-6, 6-3, 8-6. The win propelled him to a career high of no. 2 in the junior rankings. He also played in the junior championship at the 2011 US Open, losing in the third round to eventual champion Oliver Golding in three sets.
Fratangelo has mainly played on the ITF Pro Circuit since 2009. He played sparsely in both 2009 and 2010, before playing on a much more regular basis in 2011. He made his first final in July 2011 in the USA F17 event in Pittsburgh, losing to Brian Baker in straight sets.
He reached another final on the ITF Men's Circuit in May 2012, but lost in straight sets to Tennys Sandgren in Tampa, Florida.
In 2013, Fratangelo reached the semi-final in the USA F2 event in Sunrise, Florida, losing to eventual champion Robby Ginepri, and then won his first professional title the following week, beating Arthur De Greef in the final in Weston, Florida, by the score of 6–3, 3–6, 6–0. He made his second final in as many weeks when he faced De Greef once again, this time in Palm Coast, Florida, but lost 2–6, 3–6.
In April 2016, he won the 2016 French Open Wild Card Challenge by reaching the semifinals in Sarasota and winning the Savannah Challenger the following week. He put the wild card to good use by defeating compatriot Sam Querrey in the 1st round to crack the top 100 for the first time. His ranking of 99 came out on 6 June 2016, which was the 60th birthday of the man he was named after, Björn Borg. This was also his first career-match win in the main draw of a Grand Slam tournament.
At the 2021 US Open, he made his debut in mixed doubles with Madison Keys, whom he began dating four years ago. He also paired in men's doubles with Christopher Eubanks as wildcards where he reached the second round recording his first win in doubles in his career at a Grand Slam over Frances Tiafoe and Nicholas Monroe.
|Loss||0-1||Jul 2011||Usa F17, Pittsburgh||Futures||Clay||Brian Baker||5-7, 3-6|
|Loss||0-2||May 2012||Usa F13, Tampa||Futures||Clay||Tennys Sandgren||1-6, 3-6|
|Win||1-2||Jan 2013||Usa F3, Weston||Futures||Clay||Arthur De Greef||6-4, 3-6, 6-0|
|Loss||1-3||Feb 2013||Usa F4, Palm Coast||Futures||Clay||Arthur De Greef||2-6, 3-6|
|Loss||1-4||Feb 2013||Usa F6, Harlingen||Futures||Hard||Ji?í Veselý||7-5, 6-7(4-7), 3-6|
|Win||2-4||May 2013||Usa F12, Orange Park||Futures||Clay||Gerald Melzer||7-5, 6-3|
|Win||3-4||Jun 2013||Netherlands F1, Amstelveen||Futures||Clay||Thiago Monteiro||3-6, 6-4, 6-3|
|Win||4-4||May 2014||Usa F14, Tampa||Futures||Clay||Cristian Garín||6-2, 6-3|
|Win||5-4||Jul 2014||Italy F22, Sassuolo||Futures||Clay||Alberto Brizzi||6-4, 2-0 ret.|
|Win||6-4||Jul 2014||Usa F22, Decatur||Futures||Hard||Liam Broady||6-4, 6-0|
|Loss||6-5||Aug 2014||Canada F7, Calgary||Futures||Clay||Daniel Nguyen||6-7(7-9), 7-5, 4-6|
|Win||7-5||Sep 2014||Canada F9, Toronto||Futures||Hard (i)||Mitchell Krueger||6-2, 6-3|
|Win||8-5||Sep 2014||Canada F10, Toronto||Futures||Hard||Eric Quigley||6-4, 6-2|
|Win||9-5||Feb 2015||Launceston, Australia||Challenger||Hard||Hyeon Chung||4-6, 6-2, 7-5|
|Loss||9-6||Jun 2015||Caltanisetta, Italy||Challenger||Clay||Elias Ymer||3-6, 2-6|
|Loss||9-7||Jul 2015||Binghamton, United States||Challenger||Hard||Kyle Edmund||2-6, 3-6|
|Win||10-7||Apr 2016||Savannah, United States||Challenger||Clay||Jared Donaldson||6-1, 6-3|
|Loss||10-8||May 2016||Bordeaux, France||Challenger||Clay||Rogério Dutra Silva||3-6, 1-6|
|Loss||10-9||Nov 2017||Champaign, United States||Challenger||Hard (i)||Tim Smyczek||2-6, 4-6|
|Win||11-9||Oct 2018||Fairfield, United States||Challenger||Hard||Alex Bolt||6-4, 6-3|
|Loss||11-10||Nov 2018||Knoxville, United States||Challenger||Hard (i)||Reilly Opelka||5-7, 6-4, 6-7(2-7)|
|Win||12-10||Mar 2021||Cleveland, United States||Challenger||Hard (i)||Jenson Brooksby||7-5, 6-4|
|Loss||12-11||Apr 2021||Tallahassee, United States||Challenger||Clay||Jenson Brooksby||3-6, 6-4, 3-6|
|Loss||12-12||Sep 2021||Cary, United States||Challenger||Hard||Mitchell Krueger||4-6, 3-6|
|Loss||0-1||Jul 2011||USA F18 Rochester||Futures||Clay||Erik Crepaldi|| Maciek Shykut
|3-6, 6-2, [7-10]|
|Loss||0-2||Sep 2012||Canada F7 Toronto||Futures||Clay||Sekou Bangoura|| Carsten Ball
|7-6(7-2), 4-6, [9-11]|
|Win||1-2||Oct 2012||USA F29 Birmingham||Futures||Clay||Mitchell Krueger|| Chase Buchanan
|Loss||1-3||Jun 2013||Netherlands F3 Breda||Futures||Clay||Mitchell Krueger|| Henri Kontinen
|Loss||1-4||May 2014||Tallahassee, USA||Challenger||Clay||Mitchell Krueger|| Ryan Agar
|Loss||1-5||May 2014||USA F13, Orange Park||Futures||Clay||Mitchell Krueger|| Dennis Novikov
|Loss||1-6||May 2014||USA F14, Tampa||Futures||Clay||Mitchell Krueger|| Nicolas Jarry
|Loss||1-7||Jun 2014||Italy F17, Parma||Futures||Clay||Mitchell Krueger|| Lorenzo Frigerio
|Win||2-7||Jul 2014||Italy F22 Sassuolo||Futures||Clay||Daniel Dutra da Silva|| Luca Pancaldi
|Loss||2-8||Aug 2014||USA F23, Edwardsville||Futures||Hard||Mitchell Krueger|| Patrick Davidson
|Loss||2-9||Sep 2014||Canada F9, Toronto||Futures||Hard||Mitchell Krueger|| Sekou Bangoura
|4-6, 6-4, [9-11]|
|Loss||2-10||Oct 2016||Las Vegas, USA||Challenger||Hard||Denis Kudla|| Brian Baker
Current through the 2021 US Open.
|Grand Slam tournaments|