Ruud advances in Hamburg as Rublev falls; 19-year-old Akugue reaches semis in debut

Casper Ruud came from behind to defeat Cristian Garin and advance to the Hamburg quarters.
Andrey Rublev was upset by Germany's Daniel Altmaier, who reached the quarters.
Teenager Noma Noha Akugue reached the Hamburg semis in her first WTA event.
Daria Saville reached her first tour semi since recovering from injury.
Defending Hamburg champ Bernarda Pera was upset by Russian Diana Shnaider.