Santos • ATP CH 50 R2 Tobon M 62 26 61 7 May R1 Dutra Da Silva D 75 62 5 May Santa Cruz de la Sierra • ATP CH 75 R2 Aboian V 75 64 16 April R1 Varillas J 75 31 ab 14 April Mexico City • ATP CH 125 R1 Pavlovic L 7 76⁴ 46 62 7 April San Luis Potosi • ATP CH 75 MH Schoolkate T 2 26 62 76² 4 April R2 Zahraj P 62 61 1 April R1 Napolitano S 8 64 60 31 March Morelia • ATP CH 125 R1 Polmans M Q 63 36 76⁵ 24 March Triwulan 2 Mckennon M 11 64 75 23 March Q1 Sau Franco A WC 62 64 22 March Morelos • ATP CH 75 MH Daniel T 63 64 20 March R2 Martin D 64 75 19 March R1 Zhukayev B 64 62 17 March Santiago • ATP CH 75 R2 Sanchez Izquierdo N 76³ 64 12 March R1 Ficovich J 7 64 62 10 March Santiago • ATP 250 Q1 Galan D 8 76⁵ 76⁴ 21 February Metepec • ATP CH 75 R1 Gojo B 5 67⁷ 64 76⁵ 16 February Rosario • ATP CH 125 R2 Tseng C 6 63 75 4 February R1 Monteiro T 75 76³ 3 February Conception • ATP CH 100 R1 Lajovic D 4 62 61 28 January Triwulan 2 Kestelboim M 11 64 64 27 January Q1 Aguilar Cardozo J Alt 67⁶ 63 62 26 January Santiago • M 25 SF Cuenin S 3 63 62 24 January MH Gima S 5 63 61 23 January R2 Farjat T 63 75 22 January R1 Krall L Q 64 63 21 January Santiago • M 25 F Soto M 2 64 64 18 January SF Bigun K 7 64 57 62 17 January MH Rubio Fierros A 5 75 64 16 January R2 Bocchi L 62 64 15 January R1 Flores Leyton S WC 61 61 14 January