Two-time former champion Kei Nishikori recovered from a slow start to record his 20th match win at the Barcelona Open Banc Sabadell on Tuesday. The fourth-seeded Japanese star bounced back from 1-4 in the first set to win 12 of the next 15 games in a 7-5, 6-2 second-round victory over American Taylor Fritz in one hour and 41 minutes. He will next play Canadian No. 16 seed Felix Auger-Aliassime or Tunisia’s Malek Jaziri, who needed two hours and 42 minutes to overcome Delbonis’ compatriot, lucky loser Guido Andreozzi, 6-7(3), 6-4, 6-2.

Four-time former finalist David Ferrer, who intends to retire after competing at Mutua Madrid Open in two weeks’ time, lost just 11 of his service points in a 6-3, 6-1 win over Mischa Zverev of Germany in 65 minutes. The 2008-09, 2011-12 runner-up will next prepare to meet French No. 15 seed Lucas Pouille in the second round.

Elsewhere, in other first-round action, 19-year-old Spaniard Nicola Kuhn recorded the biggest win of his career over qualifier and No. 76-ranked Argentine Federico Delbonis 7-6(3), 4-6, 6-2 in two hours and 30 minutes.