Hamburg Open: Sixth seed Arnaldi knocked out in first round
Pedro Martinez won against Matteo Arnaldi 7-6 (4), 6-1 on Monday evening and will play French qualifier Ugo Blanchet in the next round

Spaniard Pedro Martinez reached the second round of the Hamburg Open by beating Italian Matteo Arnaldi, the No 6 seed, 7-6 (4), 6-1 at the Rothenbaum Tennis Center on Monday evening.
Martinez, ranked No 49, will face French qualifier Ugo Blanchet next.
Hamburg ATP 500, other first-round matches (Rothenbaum Tennis Center, clay, EUR 1,891,995):
- Francisco Cerundolo (4) beat Francisco Comesana (LL): 7-5, 6-4
- Alexander Shevchenko beat Rudolf Molleker (WC): 6-4, 4-6, 6-4, 6-4
- Laslo Djere beat Zizou Bergs: 6-3, 7-6 (4)
- Maximilian Marterer (WC) beat SoonWoo Kwon: 6-4, 6-7 (6), 7-5
- Ugo Blanchet beat Alexei Popyrin: 4-6, 7-6 (6), 6-2
- Flavio Cobolli beat Daniel Altmaier: 6-4, 6-7 (6), 6-3
- Alexander Zverev vs. Jesper De Jong
- Fabian Marozsan vs. Holger Rune
- Facundo Diaz Acosta vs. Hugo Gaston
- Dominik Koepfer vs. Sebastian Baez
- Marco Trungelliti vs. Sebastian Ofner
- Thiago Seyboth Wild vs. Zhizhen Zhang
- Felipe Meligeni Alves vs. Dusan Lajovic
- Arthur Fils vs. Jaume Munar
- Luciano Darderi vs. Lorenzo Sonego