2021: New partnership with Withrow, win over world No. 1 doubles team

At the 2021 US Open partnering Jackson Withrow they defeated top pair Nikola Mektić and Mate Pavić in the first round in 75 minutes.^[1]

2022: Two titles, top 50 debut

He reached his maiden final at the 2022 Chile Open with André Göransson.^[2]

At the 2022 San Diego Open he won his first ATP title with Withrow defeating Jason Kubler and Luke Saville.^[3] The pair moved up 25 places to 35th in the doubles race. He made his top 60 debut in the rankings at world No. 55 on 26 September 2022.

At the 2022 Korea Open (tennis) he partnered Raven Klaasen to win his second title in two weeks defeating Nicolás Barrientos and Miguel Ángel Reyes-Varela in straight sets.^[4] He moved another 7 positions up to reach the top 50 in the doubles rankings at world No. 48 on 3 October 2022.

The pair Lammons/Withrow ended the season at No. 32 in the ATP doubles Rankings.

2023: Four titles, Four finals, Masters semifinals, top 30

With Withrow he reached three finals in Auckland, in Dallas and at the ATP 500 Mexican Open in Acapulco.^[5][6]

The pair won the Challenger title at the 2023 Arizona Tennis Classic. At the 2023 Miami Open they reached the semifinals of a Masters for the first time but lost to eventual champions Santiago González and Édouard Roger-Vasselin.^[7] He made his debut in the top 30 on 8 May 2023.

The pair reached their eight final of the season and second at the ATP 500 level at the 2023 Erste Bank Open in Vienna. At the last Masters of the season in Paris the pair reached the quarterfinals defeating sixth seeds Máximo González and Andrés Molteni.^[8]

Doubles: 12 (6 titles, 6 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Feb 2022	Chile Open, Chile	250 Series	Clay	André Göransson	Felipe Meligeni Alves Rafael Matos	6–7(8–10), 6–7(3–7)
Win	1–1	Sep 2022	San Diego Open, United States	250 Series	Hard	Jackson Withrow	Jason Kubler Luke Saville	7–6(7–5), 6–2
Win	2–1	Oct 2022	Korea Open, South Korea	250 Series	Hard	Raven Klaasen	Nicolás Barrientos Miguel Ángel Reyes-Varela	6–1, 7–5
Loss	2–2	Oct 2022	Gijón Open, Spain	250 Series	Hard (i)	Jackson Withrow	Máximo González Andrés Molteni	7–6(8–6), 6–7(4–7), [5–10]
Loss	2–3	Jan 2023	Auckland Open, New Zealand	250 Series	Hard	Jackson Withrow	Nikola Mektić Mate Pavić	4–6, 7–6(7–5), [6–10]
Loss	2–4	Feb 2023	Dallas Open, United States	250 Series	Hard (i)	Jackson Withrow	Jamie Murray Michael Venus	6–1, 6–7(4–7), [7–10]
Loss	2–5	Mar 2023	Mexican Open, Mexico	500 Series	Hard	Jackson Withrow	Alexander Erler Lucas Miedler	6–7(9–11), 6–7(3–7)
Win	3–5	Jul 2023	Hall of Fame Open, United States	250 Series	Grass	Jackson Withrow	William Blumberg Max Purcell	6–3, 5–7, [10–5]
Win	4–5	Jul 2023	Atlanta Open, United States	250 Series	Hard	Jackson Withrow	Max Purcell Jordan Thompson	7–6(7–3), 7–6(7–4)
Win	5–5	Sep 2023	Winston-Salem Open, United States	250 Series	Hard	Jackson Withrow	Lloyd Glasspool Neal Skupski	6–3, 6–4
Win	6–5	Sep 2023	Astana Open, Kazakhstan	250 Series	Hard	Jackson Withrow	Mate Pavić John Peers	7–6(7–4), 7–6(9–7)
Loss	6–6	Oct 2023	Vienna Open, Austria	500 Series	Hard (i)	Jackson Withrow	Rajeev Ram Joe Salisbury	4–6, 7–5, [10–12]

Doubles

Doubles: 45 (25–20)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Jun 2016	USA F21, Tulsa	Futures	Hard	Dane Webb	Rikus de Villiers Clay Thompson	7–5, 4–6, [12–10]
Loss	1–1	Sep 2016	Israel F11, Herzliya	Futures	Hard	Dane Webb	Connor Smith Danny Thomas	3–6, 4–6
Loss	1–2	Sep 2016	Israel F12, Ashkelon	Futures	Hard	Dane Webb	Connor Smith Danny Thomas	0–6, 6–7(3–7)
Loss	1–3	Sep 2016	Israel F13, Kiryat Gat	Futures	Hard	Dane Webb	Dekel Bar Scott Clayton	4–6, 7–5, [5–10]
Win	2–3	Dec 2016	USA F40, Tallahassee	Futures	Hard (i)	Robert Galloway	Aziz Dougaz Guy Orly Iradukunda	6–4, 5–7, [10–8]
Loss	2–4	May 2017	Mexico F2, Villahermosa	Futures	Hard (i)	Farris Fathi Gosea	Kevin King Nicolaas Scholtz	6–7(4–7), 6–7(4–7)
Win	3–4	May 2017	Mexico F3, Córdoba	Futures	Hard	Farris Fathi Gosea	Hunter Callahan Bernardo Saraiva	6–4, 6–7(5–7), [10–8]
Win	4–4	Jun 2017	Zimbabwe F1, Harare	Futures	Hard	Benjamin Lock	Mark Fynn Nicolaas Scholtz	6–2, 6–3
Loss	4–5	Jun 2017	Zimbabwe F2, Harare	Futures	Hard	Benjamin Lock	Mark Fynn Nicolaas Scholtz	6–3, 1–6, [7–10]
Win	5–5	Jul 2017	Zimbabwe F3, Harare	Futures	Hard	Benjamin Lock	Baptiste Crepatte Thomas Setodji	7–6(7–4), 6–2
Loss	5–6	Jul 2017	Egypt F19, Sharm El Sheikh	Futures	Hard	Benjamin Lock	Marat Deviatiarov Tomáš Papik	4–6, 6–1, [5–10]
Loss	5–7	Jul 2017	Egypt F20, Sharm El Sheikh	Futures	Hard	Bernardo Saraiva	Julian Ocleppo Andrea Vavassori	6–2, 3–6, [8–10]
Win	6–7	Aug 2017	USA F26, Decatur	Futures	Hard	Alexandru Gozun	Edward Bourchier Harry Bourchier	6–2, 7–6(7–2)
Win	7–7	Sep 2017	France F20, Plaisir	Futures	Hard (i)	Alex Lawson	Antoine Hoang Grégoire Jacq	4–6, 7–6(9–7), [10–4]
Loss	7–8	Oct 2017	France F22, Nevers	Futures	Hard (i)	Alex Lawson	Benjamin Bonzi Antoine Hoang	6–7(5–7), 4–6
Loss	7–9	Oct 2017	France F23, Saint-Dizier	Futures	Hard (i)	Alex Lawson	Jonathan Kanar Mick Lescure	6–0, 4–6, [9–11]
Win	8–9	Oct 2017	France F24, Rodez	Futures	Hard (i)	Alex Lawson	Antoine Hoang Ugo Humbert	7–6(7–4), 4–6, [10–7]
Loss	8–10	Dec 2017	USA F39, Waco	Futures	Hard (i)	Alex Lawson	Julian Lenz Roberto Maytín	6–7(5–7), 6–1, [12–14]
Win	9–10	Dec 2017	USA F40, Tallahassee	Futures	Hard (i)	Alex Lawson	Jose E Gracia Lucas Poullain	6–3, 6–0
Win	10–10	Jul 2018	Scheveningen, Netherlands	Challenger	Clay	Ruben Gonzales	Luis David Martínez Gonçalo Oliveira	6–3, 6–7(8–10), [10–5]
Loss	10–11	Aug 2018	Sopot, Poland	Challenger	Clay	Ruben Gonzales	Mateusz Kowalczyk Szymon Walków	6–7(6–8), 3–6
Loss	10–12	Jan 2019	Columbus, USA	Challenger	Hard (i)	Robert Galloway	Maxime Cressy Bernardo Saraiva	5–7, 6–7(3–7)
Win	11–12	Jan 2019	Newport Beach, USA	Challenger	Hard	Robert Galloway	Romain Arneodo Andrei Vasilevski	7–5, 7–6(7–1)
Loss	11–13	Feb 2019	Cleveland, USA	Challenger	Hard	Robert Galloway	Romain Arneodo Andrei Vasilevski	4–6, 6–7(4–7)
Win	12–13	Feb 2019	Cherbourg, France	Challenger	Hard (i)	Robert Galloway	Raúl Brancaccio Javier Barranco Cosano	4–6, 7–6(7–4), [10–8]
Win	13–13	Jul 2019	Ludwigshafen, Germany	Challenger	Clay	Fernando Romboli	Pedro Sousa João Domingues	7–6(7–4), 6–1
Loss	13–14	Jul 2019	Braunschweig, Germany	Challenger	Clay	Antonio Šančić	Guillermo Durán Simone Bolelli	3–6, 2–6
Win	14–14	Sep 2019	New Haven, USA	Challenger	Hard	Robert Galloway	Sander Gillé Joran Vliegen	7–5, 6–4
Win	15–14	Feb 2020	Cleveland, USA	Challenger	Hard	Treat Huey	Luke Saville John-Patrick Smith	7–5, 6–2
Win	16–14	Mar 2020	Columbus, USA	Challenger	Hard	Treat Huey	Lloyd Glasspool Alex Lawson	7–6(7–3), 7–6(7–4)
Loss	16–15	Sep 2020	Iași, Romania	Challenger	Clay	Treat Huey	Rafael Matos João Menezes	2–6, 2–6
Win	17-15	Oct 2020	Split, Croatia	Challenger	Clay	Treat Huey	André Göransson Hunter Reese	6–4, 7–6(7–3)
Loss	17-16	Oct 2020	Istanbul, Turkey	Challenger	Hard	Robert Galloway	Ariel Behar Gonzalo Escobar	6–4, 3–6, [7–10]
Loss	17-17	Nov 2020	Cary, United States	Challenger	Hard	Luke Bambridge	Teymuraz Gabashvili Dennis Novikov	5–7, 6–4, [8–10]
Win	18-17	Mar 2021	Nur-Sultan, Kazakhstan	Challenger	Hard (i)	Jackson Withrow	Nathan Pasha Max Schnur	6-4, 6-2
Win	19-17	May 2021	Biella, Italy	Challenger	Clay	André Göransson	Rafael Matos Felipe Meligeni Alves	7–6(7–3), 6–3
Win	20–17	May 2021	Heilbronn, Germany	Challenger	Clay	Jackson Withrow	André Göransson Sem Verbeek	6–7(4–7), 6–4, [10–8]
Loss	20-18	Sep 2021	Szczecin, Poland	Challenger	Clay	André Göransson	Santiago González Andrés Molteni	6–2, 2–6, [13–15]
Win	21–18	Nov 2021	Champaign, USA	Challenger	Hard (i)	Jackson Withrow	Treat Huey Max Schnur	6–4, 3–6, [10–6]
Loss	21-19	Apr 2022	Sarasota, USA	Challenger	Clay	André Göransson	Robert Galloway Jackson Withrow	3–6, 6–7(3–7)
Win	22–19	Apr 2022	Split, Croatia	Challenger	Clay	Albano Olivetti	Sadio Doumbia Fabien Reboul	4–6, 7–6(8–6), [10–7]
Win	23–19	Jul 2022	Salzburg, Austria	Challenger	Clay	Jackson Withrow	Alexander Erler Lucas Miedler	7–5, 5–7, [11–9]
Win	24–19	Sep 2022	Cary, USA	Challenger	Hard	Jackson Withrow	Treat Huey John-Patrick Smith	7–5, 2–6, [10–5]
Win	25–19	Mar 2023	Phoenix, USA	Challenger	Hard	Jackson Withrow	Hugo Nys Jan Zieliński	6–7(1–7), 6–4, [10–8]
Loss	25-20	May 2023	Turin, Italy	Challenger	Clay[lower-alpha 1]	John Peers	Andrey Golubev Denys Molchanov	6–7(4–7), 7–6(8–6), [5–10]