Novak Djokovic beat Germany's Jan-Lennard Struff to reach the quarter-finals at Roland Garros. The Serb is bidding to hold all four Grand Slam titles at the same time. Subscribe to our channel here: https://cna.asia/youtubesub Subscribe to our news service: WhatsApp: https://cna.asia/whatsapp Telegram: https://t.me/cnalatest Follow us: CNA: https://cna.asia CNA Lifestyle: http://www.cnalifestyle.com Facebook: https://www.facebook.com/channelnewsasia Instagram: https://www.instagram.com/channelnewsasia Twitter: https://www.twitter.com/channelnewsasia