Mexican Open: Zverev battles past Arnaldi to move into second round

German Alexander Zverev, the top seed, reached the second round of the Mexican Open by edging out Italian Matteo Arnaldi 6-7 (2), 6-3, 6-4 at the Arena GNP Seguros in Acapulco.

Zverev, ranked No 2, will play American qualifier Learner Tien next.

Acapulco ATP 500, other first-round results (Arena GNP Seguros, hard, USD 2.585.410, most recent results first):

• Frances Tiafoe vs. Alexandre Muller
• Alex Michelsen vs. Yunchaokete Bu
• Denis Shapovalov (9) beat Nishesh Basavareddy (Q): 7-5, 6-2
• Brandon Nakashima beat Benjamin Bonzi: 7-6 (6), 7-5
• Rodrigo Pacheco Mendez (WC) beat Aleksandar Vukic: 7-5, 4-6, 7-6 (4)
• Alejandro Davidovich Fokina beat Mattia Bellucci (LL): 1-6, 7-6 (6), 6-2
• Holger Rune (4) beat Roberto Carballes Baena: 7-6 (4), 6-3
• Tommy Paul (3) beat Gabriel Diallo (Q): 6-2, 6-2
• Learner Tien beat Cameron Norrie: 7-6 (5), 6-3
• David Goffin beat Rinky Hijikata: 6-2, 6-3
• Marcos Giron beat Adam Walton (Q): 7-6 (4), 6-2
• Ben Shelton (5) beat Flavio Cobolli: 7-6 (4), 7-6 (4)
• Casper Ruud (2) beat Arthur Rinderknech: 6-4, 6-3
• Tomas Machac (8) beat Jakub Mensik: 6-4, 2-6, 6-3
• Daniel Altmaier (WC) beat Miomir Kecmanovic: 4-6, 6-4, 6-3