Record winner Rafael Nadal was on Thursday drawn to face Olympic champion Alexander Zverev in an extraordinary first round duel at what are expected to be his last French Open. The two met in an epic Roland Garros semi-final two years ago which however ended late in the second set when Zverev suffered a severe ankle injury which sidelined him for the rest of the year. Nadal went on to win a 14th title at the event that defined his career, and this year’s edition from Sunday onwards is believed to be his last showing as he is expected to retire this year. Nadal has struggled with injury since t…