| ATP - Buenos Aires | 02/13 19:30 | 26 | [51] Leonardo Mayer v Guido Pella [50] | 4-6,6-1,6-7 | |
| ATP - Buenos Aires | 02/12 19:00 | 25 | Francisco Cerundolo v Guido Pella | 6-3,4-6,1-6 | |
| ATP - Cordoba | 02/10 22:05 | 29 | [59] Guido Pella v Juan Ignacio Londero [112] | 6-3,5-7,1-6 | |
| ATP - Cordoba | 02/10 00:00 | 28 | [92] Pablo Cuevas v Guido Pella [59] | 1-6,6-3,3-6 | |
| ATP - Cordoba | 02/08 23:05 | 27 | [20] Diego Schwartzman v Guido Pella [59] | 5-7,2-6 | |
| ATP - Cordoba | 02/08 02:00 | 26 | [71] Albert Ramos-Vinolas v Guido Pella [59] | 4-6,6-7 | |
| ATP - Cordoba | 02/05 18:00 | 25 | Pedro Sousa v Guido Pella | Cancelled | |
| ATP - Cordoba | 02/04 22:10 | 25 | [114] Paolo Lorenzi v Guido Pella [59] | 1-6,3-6 | |
| Australian Open | 01/15 02:00 | 23 | [65] Guido Pella v Joao Sousa [44] | 6-7,6-4,6-7,6-4,2-6 | |
| ATP - Auckland | 01/08 01:05 | 25 | [66] Guido Pella v Peter Gojowczyk [60] | 1-6,6-3,2-6 | |
| ATP - Doha | 01/02 13:50 | 26 | Guido Pella v Marco Cecchinato | Walkover | |
| ATP - Doha | 01/01 12:30 | 25 | [58] Guido Pella v Cem Ilkel [249] | 7-6,6-3 | |
| Challenger - Montevideo | 11/11 21:30 | 29 | [127] Carlos Berlocq v Guido Pella [65] | 3-6,6-3,1-6 | |
| Challenger - Montevideo | 11/11 15:00 | 28 | [114] Pedro Sousa v Guido Pella [65] | 6-2,3-6,4-6 | |
| Challenger - Montevideo | 11/09 18:00 | 27 | [205] Lorenzo Giustino v Guido Pella [65] | Retired | |
| Challenger - Montevideo | 11/07 23:00 | 26 | [186] Pedja Krstin v Guido Pella [65] | 6-1,3-6,5-7 | |
| Challenger - Montevideo | 11/05 21:00 | 25 | [230] Roberto Cid Subervi v Guido Pella [65] | 4-6,1-6 | |
| ATP - Paris | 10/27 10:00 | 45 | [39] Matthew Ebden v Guido Pella [65] | 6-3,3-6,6-1 | |
| ATP - Wien | 10/21 13:05 | 164 | [65] Guido Pella v Ruben Bemelmans [110] | 4-6,0-6 | |
| ATP - Wien | 10/20 14:10 | 64 | [65] Guido Pella v Jurgen Zopp [133] | Retired | |
| ATP - Antwerp | 10/16 16:30 | 25 | [75] Jo-Wilfried Tsonga v Guido Pella [65] | 7-5,5-7,7-6 | |
| ATP - Chengdu | 09/25 05:00 | 25 | [59] Guido Pella v Sam Querrey [58] | 6-7,1-6 | |
| ATP - St. Petersborg | 09/20 11:30 | 26 | [28] Damir Dzumhur v Guido Pella [60] | 6-4,6-4 | |
| ATP - St. Petersborg | 09/19 12:00 | 25 | [100] Ilya Ivashka v Guido Pella [60] | 6-4,3-6,4-6 | |
| Davis Cup | 09/14 17:00 | 26 | [62] Guido Pella v Daniel Elahi Galan [209] | 3-6,6-4,4-6,6-3,6-2 | |
| US Open | 08/31 17:25 | 25 | [37] Nikoloz Basilashvili v Guido Pella [66] | 6-3,6-4,1-6,7-6 | |
| US Open | 08/29 20:40 | 24 | [66] Guido Pella v Paolo Lorenzi [94] | 7-5,6-0,6-2 | |
| US Open | 08/27 15:00 | 23 | [143] Casper Ruud v Guido Pella [66] | 4-6,4-6,1-6 | |
| ATP - Winston-Salem | 08/20 00:20 | 24 | Guido Pella v Roberto Carballes Baena | 4-6,2-6 | |
| ATP - Gstaad | 07/24 13:50 | 25 | Guido Pella v Paolo Lorenzi | Cancelled |