02.03.21 | 1st round | Nathaniel Lammons/Jack Withrow | Denis Istomin/Denis Yevseyev | 6-1, 4-6, 10-7 |  | match details | Nur Sultan | I. hard |
26.02.21 | 1/2 | Jonathan Erlich/Andrei Vasilevski | Nathaniel Lammons/Jack Withrow | 7-68, 6-4 |  | match details | Montpellier | I. hard |
25.02.21 | 1/4 | Nathaniel Lammons/Jack Withrow | Marcelo Arevalo/Matwe Middelkoop | 6-4, 7-66 |  | match details |
24.02.21 | 1st round | Nathaniel Lammons/Jack Withrow | Fabrice Martin/Gilles Simon | 6-4, 6-74, 10-6 |  | match details |
19.02.21 | 1/2 | Lloyd Glasspool/Harri Heliovaara | Nathaniel Lammons/Jack Withrow | 7-64, 7-66 |  | match details | Biella 2 | I. hard |
18.02.21 | 1/4 | Nathaniel Lammons/Jack Withrow | Luis David Martinez/David Vega Hernandez | 7-5, 6-4 |  | match details |
16.02.21 | 1st round | Nathaniel Lammons/Jack Withrow | Kamil Majchrzak/Nathan Pasha | 6-4, 6-4 |  | match details |
11.02.21 | 1/4 | Antoine Hoang/Albano Olivetti | Nathaniel Lammons/Jack Withrow | 6-76, 7-63, 10-5 |  | match details | Cherbourg Challenger | I. hard |
09.02.21 | 1st round | Nathaniel Lammons/Jack Withrow | Denis Kudla/Robert Lindstedt | 6-1, 6-2 |  | match details |
02.02.21 | 1st round | Arthur Cazaux/Hugo Gaston | Nathaniel Lammons/Jack Withrow | 6-3, 6-4 |  | match details | Quimper 2 | I. hard |
28.01.21 | 1/4 | Gregoire Barrere/Albano Olivetti | Nathaniel Lammons/Jack Withrow | 4-6, 7-63, 10-6 |  | match details | Quimper Challenger | I. hard |
26.01.21 | 1st round | Nathaniel Lammons/Jack Withrow | Federico Gaio/Roberto Marcora | 6-2, 6-4 |  | match details |
19.01.21 | 1st round | Lloyd Glasspool/Harri Heliovaara | Nathaniel Lammons/Jack Withrow | 7-61, 6-4 |  | match details | Istanbul Challenger | I. hard |
07.01.21 | 1st round | Cameron Norrie/Jonny O'Mara | Nathaniel Lammons/Jack Withrow | 6-4, 6-4 |  | match details | Delray Beach | Hard |
23.04.19 | 1st round | Harri Heliovaara/Alex Lawson | Nathaniel Lammons/Jack Withrow | 7-63, 3-6, 10-7 |  | match details | Tallahassee Challenger | Clay |