The former Racing Club playmaker also revealed the reason for his move to La Liga.
Nishikori needed six match points to seal the win in two hours at the ATP Masters event held behind closed doors at the Foro Italico.
Dortmund's season opener this Saturday evening against Borussia Moenchengladbach might well deliver first impressions of how the top German league's 2020/21 story might end.
The ExCo meeting opened with a moment of silence in memory of former WADA President John Fahey, who passed away last Saturday in Australia at the age of 75. Enditem
Teuta beat Israeli side Beitar Jerusalem 2-0 in the previous round and may have the advantage of greater match fitness, although Granada have greater quality, which they will need to show if they want to advance to the penultimate qualifying round on September 24. Enditem
Khalid Al-Ghannam (R) of Al Nassr FC vies for the ball with Seyed Mohammad Karimi of Sepahan FC during the AFC Asian Champions League group D football match between Al Nassr FC of Saudi Arabia and Sepahan FC of Iran at Jassim Bin Hamad Stadium in Doha, Capital of Qatar, September 15, 2020. (Photo by Nikku/Xinhua)
"My idea was to play in a more competitive league. When I had the proposal from Deportivo Alaves I didn't hesitate to come here because I know that it is a league with very good players and a high level of competition," he added. Enditem
"I am very happy and excited. This is the next step for me. I hope to help the team and that we will fight for promotion to the Premier League. I spoke to my compatriot Krystian Bielik, who also plays here. He advised me to join the club," said the player.
Finland's six-time champions KuPS Kuopio will face the Lithuanian champions FK Suduva in the third round of the Europa League Qualifiers. Enditem
Zhao's compatriots Lu Ning and Xu Si both competed in the other group on Thursday as David Gilbert edged them out with an advantage of the break.
Djokovic beat his fellow Serb Filip Krajinovic 7-6 (7), 6-3, while Nadal won 6-1, 6-3 against Dusan Lajovic, also of Serbia.