There were no shocks on the cards for Andrey Rublev and Alexander Zverev at the Madrid Open after both managed to beat Yoshihito Nishioka and Hugo Grenier respectively on the clay surface at Madrid. Elsewhere, there win wins for Jaume Munar and Karen Khachanov over Matteo Arnaldi and Roberto Bautista-Agut respectively. Carlos Alcaraz and Holger Rune are among those in action later.
Andrey Rublev eased into the last-16 of the Madrid Open with a straight-sets victory over Yoshihito Nishioka of Japan.
Rublev made light work of Nishioka after winning the match in one hour and 27 minutes, breaking the world No. 34 twice to claim the first set 6-2.
Nishioka made it a more evenly contested second set, as the first 10 games all went on serve before the world No. 6 secured a decisive break to move 6-5 ahead.
The Russian then won the 12th game on his second match point to wrap up the set 7-5 and set up a last-16 meeting with Karen Khachanov.
Alexander Zverev also safely secured his place in the last-16 with a straight-sets win of his own against Hugo Grenier.
The match was concluded in only 57 minutes, as the Frenchman was dispatched 6-1 6-0 with Zverev losing just a solitary game across the two sets.
Elsewhere, Jaume Munar overcame Matteo Arnaldi after losing the first set to advance into the last-16.
Both players lost their respective service games to leave the score level at 1-1, but Munar was broken in the fourth game to love on route to claiming the first set.
The remaining five games would all go to serve as Arnaldi drew first blood in the contest.
However, Munar responded by winning the next two sets and broke Arnaldi four times in the process to prevail 3-6 6-3 6-1.
Khachanov sealed his place in the last-16 and a meeting with Rublev after a three-set win over Roberto Bautista-Agut with a 7-5 4-6 6-3 victory.
Khachanov won the first set in a breathless 12th game and on his second set point.
The world No. 25 fought back in the second set, and after the first eight games all went to serve, he broke Khachanov and then levelled the match.
The world No.12 won the decisive third set in only 41 minutes and broke Bautista-Agut in the eighth game, before winning the ninth game to love and securing the match.
