Watch as Alexander Zverev earns an early break of serve in the second set, ripping a forehand down the line to end an extended rally against Novak Djokovic at the Nitto ATP Finals. After the match Zverev said: 'I'd like to congratulate Novak on a great week and the second half of the season. You've barely lost a match and I'm actually very thankful you lost to me today. We've played twice this week. Everyone knows how good of a tennis player you are, but I want to mention how good of a person you are. We've had a lot of good talks on life. I appreciate you letting me win the title today.'