| 2019 Heilbronner Neckarcup | |
|---|---|
| Date | 13–19 May |
| Edition | 6th |
| Draw | 48S / 16D |
| Surface | Clay |
| Location | Heilbronn, Germany |
| Champions | |
| Singles | |
 Filip Krajinović | |
| Doubles | |
 Kevin Krawietz / Andreas Mies | |
The 2019 Heilbronner Neckarcup was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Heilbronn, Germany between 13 and 19 May 2019.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| SRB | Filip Krajinović | 74 | 1 |
 USA | Tennys Sandgren | 89 | 2 |
 KAZ | Alexander Bublik | 94 | 3 |
 CZE | Jiří Veselý | 100 | 4 |
 UZB | Denis Istomin | 103 | 5 |
 BOL | Hugo Dellien | 109 | 6 |
 BRA | Thiago Monteiro | 110 | 7 |
| GER | |||
 SWE | Elias Ymer | 113 | 9 |
| GER | Yannick Maden | 116 | 10 |
 AUT | Dennis Novak | 121 | 11 |
 ESP | Guillermo García López | 123 | 12 |
 ITA | Stefano Travaglia | 124 | 13 |
 CAN | Peter Polansky | 125 | 14 |
| AUT | Sebastian Ofner | 126 | 15 |
| GER | Matthias Bachinger | 130 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using their ITF World Tennis Ranking:
Hernán Casanova 
Baptiste Crepatte Peter Heller
Aslan Karatsev Arthur Rinderknech The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Filip Krajinović def. 
Arthur De Greef 6–3, 6–1. Kevin Krawietz / Andreas Mies def. Andre Begemann / Fabrice Martin 6–2, 6–4.The 2015 Franken Challenge was a professional tennis tournament played on clay courts. It was the 28th edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Fürth, Germany between 1 and 7 June 2015.
The 2015 Sparkassen Open was a professional tennis tournament played on clay courts. It was the 22nd edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Braunschweig, Germany between 6 and 11 July 2015.
The 2016 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the 1st edition of the Sofia Open as part of the ATP World Tour 250 series of the 2016 ATP World Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from February 1–7.
The 2016 Garden Open was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Rome, Italy between 2 and 7 May 2016.
The 2015 BFD Energy Challenger was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Rome, Italy between 28 September and 4 October 2015.
The 2017 Internazionali di Tennis d'Abruzzo will be a professional tennis tournament played on clay courts. It will be the first edition of the tournament which will be part of the 2017 ATP Challenger Tour. It will take place in Francavilla al Mare, Italy between 24 and 30 April 2017.
The 2017 Heilbronner Neckarcup was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Heilbronn, Germany between 15 and 21 May 2017.
The 2017 Internazionali di Tennis Città di Vicenza was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Vicenza, Italy between 29 May and 4 June 2017.
The 2017 Banja Luka Challenger was a professional tennis tournament played on clay courts. It was the sixteenth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Banja Luka, Bosnia and Herzegovina from 11 to 17 September 2017.
The 2018 Meerbusch Challenger was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Meerbusch, Germany, between 13 and 19 August 2018.
The 2019 Hungarian Challenger Open was a professional tennis tournament played on indoor hard courts. It was the fourth edition of the tournament and was a part of the 2019 ATP Challenger Tour. It took place in Budapest, Hungary between 4 and 10 February 2019.
The 2019 Verrazzano Open was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Sophia Antipolis, France between 1 and 7 April 2019.
The 2019 Estoril Open was a professional men's tennis tournament played on outdoor clay courts. It was the fifth edition of the Estoril Open, and part of the ATP Tour 250 series of the 2019 ATP Tour. The event took place at the Clube de Ténis do Estoril in Cascais, Portugal, from April 29 through May 5, 2019.
The 2019 Antalya Open was a men's tennis tournament played on grass courts. It was the 3rd edition of the event, and part of the ATP Tour 250 series of the 2019 ATP Tour. It took place at the Kaya Palazzo Resort in Belek, Antalya Province, Turkey, from June 23–29.
The 2019 Rakuten Japan Open Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was be the 46th edition of the Japan Open, and part of the ATP Tour 500 series of the 2019 ATP Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from September 30–October 6, 2019.
The 2020 Bett1Hulks Championship is a ATP tournament organised for male professional tennis players, held in Cologne, Germany, in mid-October 2020 on indoor hard courts. It was primarily organised due to the cancellation of many tournaments during the 2020 season, because of the ongoing COVID-19 pandemic. It is the first edition of the tournament, and it will take place at the Lanxess Arena in Cologne, Germany, from October 19 through 25, 2020.
The 2020 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 46th edition of the event, and part of the ATP Tour 500 Series of the 2020 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 26 October until 1 November 2020.
The 2021 ABN AMRO World Tennis Tournament is a men's tennis tournament played on indoor hard courts. It is taking place at the Rotterdam Ahoy arena in the Dutch city of Rotterdam, between 1 and 7 March 2021. It is the 48th edition of the Rotterdam Open, and part of the ATP Tour 500 series on the 2021 ATP Tour. The tournament also included a Men's Wheelchair Tennis Singles and Doubles draw.
The 2021 Geneva Open is a men's tennis tournament currently played on outdoor clay courts. It is the 18th edition of the Geneva Open and part of the ATP Tour 250 series of the 2021 ATP Tour. It takes place at the Tennis Club de Genève in Geneva, Switzerland, from May 15 through May 22, 2021.
The 2021 Hamburg European Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 115th edition of the event for the men and the 19th edition for the women, after last tournament being held in 2002. The tournament was classified as a WTA 250 tournament on the 2021 WTA Tour and as an ATP Tour 500 series on the 2021 ATP Tour. The tournament took place at the Am Rothenbaum in Hamburg, Germany between 6 and 18 July 2021.
