Plenty of tennis action took place on Tuesday in Europe and North America, with Dominic Thiem, Jenson Brooksby and Mackenzie McDonald among the winners of their respective matches.Thiem booked his place in the last 16 of the Generali Open in Kitzbuhel by beating Alexander Shevchenko 6-4, 6-2. He will take on compatriot Sebastian Ofner next.Brooksby and McDonald both reached the last 16 of the Atlanta Open by beating Benoit Paire and Denis Kudla respectively, while Tommy Paul beat Jack Sock in straight sets.Barbora Krejcikova and Anett Kontaveit booked their places in the second round of the Prague Open. The former beat Anna Blinkova 6-3, 6-1 while the latter thrashed Ekaterine Gorgodze 6-0, 6-1.Here's a detailed look at all the results from the matches that took place on Tuesday:Atlanta OpenMen's singles first round(WC) Ben Shelton def (Q) Ramkumar Ramanathan 6-2, 7-5Mackenzie McDonald def. Denis Kudla 6-2, 7-6(8)(5) Tommy Paul def. (WC) Jack Sock 6-1, 6-1(6) Jenson Brooksby def. Benoit Paire 6-3, 6-1Ilya Ivashka def. Quentin Halys 6-0, 3-6, 6-3John Millman def. Alexei Popyrin 7-6(1), 4-6, 6-3(8) Brandon Nakashima def. Jordan Thompson 7-6(5), 3-6, 6-3(LL) Adrian Mannarino def. (Q) Peter Gojowczyk 6-3, 7-6(7)James Duckworth def. (Q) Dominik Koepfer 6-1, 6-7(5), 6-3(WC) Andres Martin def. Thanasi Kokkinakis 6-3, 6-2Men's doubles first roundJason Kubler / John Peers def. Andrei Duarte / Alvaro Regalado Pedrol 6-3, 6-2Gonzalo Escobar / Hunter Reese def. Raven Klaassen / Marcelo Melo 3-6, 6-3, 10-5(4) Matthew Ebden / Max Purcell def. Frances Tiafoe / Alexei Popyrin 6-3, 7-6(4)Generali Open KitzbuhelMen's singles first roundPablo Andujar def. (9) Lorenzo Sonego 6-4, 3-6, 7-6(4)Yannick Hanfmann def. (Q) Gerald Melzer 6-4, 1-1 (ret'd)(Q) Sebastian Ofner def. (10) Richard Gasquet 1-6, 7-5, 7-5(PR) Dominic Thiem def. Alexander Shevchenko 6-4, 6-2(7) Pedro Martinez def. Nicolas Jarry 7-6(4), 6-3ATP Tour@atptourThiem advances in Kitzbuhel! @domithiem takes out Alexander Shevchenko 6-4, 6-2 to secure a place in Round 2!#GeneraliOpen33722Thiem advances in Kitzbuhel! 🔥@domithiem takes out Alexander Shevchenko 6-4, 6-2 to secure a place in Round 2!#GeneraliOpen https://t.co/yrrEEuuhlzMen's doubles first roundTallon Griekspoor / Bart Stevens def. Alexander Erler / Lucas Miedler 6-3, 1-6, 10-4(WC) Neil Oberleitner / Jurij Rodionov def. (4) Sander Gille / Joran Vliegen 6-4, 3-6, 11-9Robin Haase / Philipp Oswald def. Jonathan Erlich / Joao Sousa 6-4, 6-4(3) Kevin Krawietz / Andreas Mies def. Albert Ramos-Vinolas / Carlos Taberner 6-3, 6-3Croatia Open UmagMen's singles first roundDaniel Galan def. (7) Fabio Fognini 6-3, 5-7, 6-3Roberto Carballes Baena def. Henri Laaksonen 6-4, 7-5(Q) Marco Cecchinato def. (WC) Mili Poljicak 6-1, 5-7, 6-2Jaume Munar def. Mikael Ymer 4-6, 6-1, 6-4Giulio Zeppieri def. Pedro Cachin 3-6, 6-1, 6-4Bernabe Zapata Miralles def. Bruno Prizmic 6-4, 3-0 (ret'd)(2) Alex Molcan def. Duje Ajdukovic 6-2, 7-6(2)Facundo Bagnis def. Tomas Martin Etcheverry 7-5, 6-3(LL) Norbert Gombos def. Federico Delbonis 6-4, 5-7, 6-4(Q) Corentin Moutet def. (6) Daniel Altmaier 6-4, 6-2Men's doubles first round(1) Fabio Fognini / Simone Bolelli def. Roberto Carballes Baena / Tomas Martin Etcheverry 6-2, 6-2(2) Rafael Matos / David Vega Hernandez def. Albano Olivetti / Fernando Romboli 3-6, 6-3, 11-9Nathaniel Lammons / Jackson Withrow def. Roman Jebovy / Denys Molchanov 2-6, 6-4, 10-6(3) Lloyd Glasspool / Harri Heliovaara def. Sander Arends / David Pel 6-3, 7-6(2)Livesport Prague OpenWomen's singles first round(2) Barbora Krejcikova def. Anna Blinkova 6-3, 6-1(WC) Linda Noskova def. (LL) Natalia Vikhlyantseva 6-2, 3-1 (ret'd)(1) Anett Kontaveit def. Ekaterine Gorgodze 6-0, 6-1(Q) Oksana Selekhmeteva def. (4) Sorana Cirstea 7-5, 6-4(Q) Dominika Salkova def. Ylena In-Albon 6-1, 6-4(7) Anastasia Potapova def. Wang Xinyu 6-1, 6-2Viktoriya Tomova def. Daria Snigur 6-4, 6-2(Q) Lucie Havlickova def. (WC) Barbora Palicova 6-2, 7-6(5)(5) Alize Cornet def. (Q) Anastasia Zakharova 6-2, 6-3Sportskeeda Tennis@SK__TennisDefending champion Barbora Krejcikova is into the second round of Prague Open easily The second seed defeated Russia's Anna Blinkova 6-3, 6-1 #BarboraKrejcikova #Prague #TennisDefending champion Barbora Krejcikova is into the second round of Prague Open easily 👏The second seed defeated Russia's Anna Blinkova 6-3, 6-1 💪#BarboraKrejcikova #Prague #Tennis https://t.co/BHN3W2CakDWomen's doubles first round(3) Miyu Kato / Samantha Murray def. Astra Sharma / Ingrid Neel 7-5, 6-4Olga Kalashnikova / Vitalia Diatchenko def. Han Xinyun / Alexandra Panova 6-3, 6-4Viktoriya Kuzmova / Monica Niculescu def. Magda Linette /Yanina Wickmayer 6-4, 6-4BNP Paribas Poland OpenWomen's singles first round(10) Jasmine Paolini def. Danka Kovinic 6-1, 6-1Anna Bogdan def. (10) Nuria Parrizas-Diaz 6-4, 7-6(3)Clara Burel def. Anna Karolina Schmiedlova 7-6(5), 6-1Women's doubles first round(PR) Renata Voracova / Paula Kania-Chodun def. Alicia Barnett / Olivia Nicholls 3-6, 7-5, 11-9