______ won the men’s singles title in the Davis Cup 2019 ?

1) Roger Federer
2) Alexander Zverev
3) Daniil Medvedev
4) Rafael Nadal

Explanation:
On November 24, 2019, Spanish tennis player Rafael Nadal (33 years) led Spain to clinch its sixth Davis Cup title 2019 by defeating Denis Shapovalov of Canada in men’s singles. The Davis cup finals was conducted from November 18-24, 2019. It was held on indoor hard courts at the Caja Mágica in Madrid, Spain. In 2019 he extraordinarily won French Open and the United State (US) Open, made the Australian Open final and also reached the Wimbledon semifinals.He previously won Davis Cup in the year 2004, 2009 and 2011.