Mexican Open: Arnaldi upsets fourth seed Fritz to reach second round
The Italian will face American Ben Shelton in the next round

Italian Matteo Arnaldi upset American Taylor Fritz, the No 4 seed, 6-4, 4-6, 6-3 to reach the second round of the Mexican Open at the Princess Mundo Imperial Resort in Acapulco on Tuesday.
Arnaldi, ranked No 42, will play another American, the left-handed Ben Shelton, next. This was the second career top 10 win for the Italian.
Fritz had been in good form coming into this week, reaching the quarter-finals of the Australian Open and winning the Delray Beach Open title last week.
Acapulco ATP 500, other first-round matches (Princess Mundo Imperial Resort, hard, USD 2,206,080):
- Flavio Cobolli (Q) beat Felix Auger-Aliassime: 2-6, 6-3, 6-2
- Alex De Minaur (3) beat Taro Daniel: 6-2, 6-1
- Yoshihito Nishioka (LL) beat Nuno Borges: 3-6, 6-2, 6-4
- Sebastian Ofner beat Ernesto Escobedo (WC): 6-7 (7), 6-4, 7-6 (4)
- Ben Shelton beat Daniel Evans: 2-6, 7-5, 7-6 (5)
- Jack Draper beat Tommy Paul (7): 6-0, 6-4
- Miomir Kecmanovic beat Diego Schwartzman (WC): 4-6, 6-3, 6-1
- Rodrigo Pacheco Mendez vs. Dusan Lajovic
- Alexander Zverev vs. Daniel Altmaier
- Michael Mmoh vs. Holger Rune
- Aleksandar Kovacevic vs. Jordan Thompson
- Casper Ruud vs. Christopher Eubanks
- Terence Atmane vs. Dominik Koepfer
- Frances Tiafoe vs. Max Purcell
- Roman Safiullin vs. Stefanos Tsitsipas