BERLIN — Top seed Alexander Zverev had to contend with a crying baby Friday before setting up a semifinal clash against South Korea's Hyeon Chung at the Munich ATP tournament. The 21-year-old Zverev, ranked third in the world, needed just over an hour to beat German compatriot Jan-Lennard Struff 6-3, 6-2 in his quarterfinal match. However, a crying infant briefly distracted Zverev between serves on his second match point before the defending champion wrapped up his 19th match win this year with a second-serve ace. With good returns and well-placed ground strokes, Zverev had few other problems and despite recent close matches between the pair, Struff never found his rhythm. I'm glad I didn't have to go to three sets again, said Zverev who had to go the distance to beat Struff in Monaco this year and Munich in 2017. Zverev will be chasing his first win over Chung after defeats last year in Barcelona and in the third round of the Australian Open in January. Chung, who reached the Australian Open semifinals, had few problems as he beat 2014 Munich winner Martin Klizan 6-3, 6-4 in his last eight tie on Friday. I'm really happy to make the semifinals two years in a row, said Chung. Chung, 21, beat Klizan in the Munich quarterfinals for the second successive year. Serving at 4-5 in the second set with the scores at 30-all, Klizan hit a double fault and then struck a forehand long to hand the Korean victory. In Friday's other quarterfinals sixth-seed Philipp Kohlschreiber faces Spain's Roberto Bautista Agut while Hungary's Marton Fucsovic faces Germany's Maximilian Marterer. Cilic pulls out of Madrid

World No. 4 Marin Cilic announced on Friday that he will miss next week's Madrid Open tournament with a knee injury suffered during last month's Monte Carlo Masters. The former US Open champion was dumped out in his first match in Istanbul by unseeded Tunisian Malek Jaziri Thursday, having struggled with the knee problem during his campaign in Monaco, where he was knocked out in the third round by Kei Nishikori. I began feeling sharp knee pain back in Monaco and while I'm eager to compete, my team and I decided the best option is to pause and focus on rehab, Cilic wrote on Twitter. The injury casts doubt on the Croatian's participation at the French Open, which starts on May 27. Cilic, who lost to Roger Federer in both last year's Wimbledon final and January's Australian Open final, reached the last eight at Roland Garros for the first time in his career last year. He joins the likes of Stan Wawrinka, Roger Federer and Andy Murray in missing the Masters event in Madrid, where world number one Rafael Nadal will be a red-hot favourite after winning his 11th Barcelona and Monte Carlo titles. — AFP