After a tight battle during the first set, Stefanos Tsitsipas steps on the gas against Sebastian Ofner over the final two sets to advance to the quarterfinals at the French Open. #NBCSports #FrenchOpen #StefanosTsitsipas #SebastianOfner » Subscribe to NBC Sports: https://www.youtube.com/nbcsports?sub_confirmation=1 » Watch Live Sports on NBCSports.com: http://www.nbcsports.com/live NBC Sports Group serves sports fans 24/7 with premier live events, insightful studio shows, and compelling original programming. NBC Sports is an established leader in the sports media landscape with an unparalleled collection of sports properties that include the Olympics, NFL, Premier League, NASCAR, PGA TOUR, the Kentucky Derby, Tour de France, French Open, IndyCar and many more. Subscribe to our channel for the latest sporting news and highlights! Visit NBC Sports: https://www.nbcsports.com Find NBC Sports on Facebook: https://www.facebook.com/NBCSports Follow NBC Sports on Twitter: https://twitter.com/nbcsports Follow NBC Sports on Instagram: https://www.instagram.com/nbcsports/ https://www.nbcsports.com/nfl/sunday-night-football https://nbcsports.com/motors/nascar https://nbcsports.com/soccer/premier-league French Open fourth round: Stefanos Tsitsipas makes light work of Sebastian Ofner | NBC Sports https://www.youtube.com/nbcsports