Rafa (Nadal) fought his best. We all know Rafa is not about giving up.

London, Nov. 14: Rafael Nadal came back from the dead against Daniil Medvedev on Wednesday to keep his ATP Finals hopes alive and boost his chances of finishing as the year-end number one.

The Spaniard was on the brink of defeat when facing a match point on his own serve after being broken twice in the deciding set but stormed back to win 6-7 (3/7), 6-3, 7-6 (7/4).

Both players were under intense pressure after losing their opening roundrobin matches in Group Andre Agassi ahead of the match at London’s O2 Arena.

Nadal is on a double mission in London — aiming to win the end-of-season event for the first time in his illustrious career and to secure the year-end number one spot.

Russia’s Medvedev took the first set on a tie-break to leave Nadal staring down the barrel.

The Spanish veteran broke his 23-year-old opponent early in the second set, repeating the trick to level the match.

But Medvedev was quickly into his stride in the decider, sprinting to the net to dispatch a crosscourt backhand past his opponent and earn a double break.

Nadal, who came into the tournament under an injury cloud, avoided the embarrassment of a “bagel”, which looked a distinct possibility at one stage.

Nadal fended off a match point on his own serve and then, roared on by the crowd, broke Medvedev twice to level the match at 5-5 and edged ahead 6-5.

But just when it seemed Medvedev was slipping inexorably towards defeat, he managed to hit the reset button and hold to take the third set into a tiebreak.

Medvedev was first to falter in the shootout, hitting a regulation forehand wide to hand Nadal two match points and he sealed the win on the next point.

TSITSIPAS DOWNS CHAMP ZVEREV IN STRAIGHT SETS

Meanwhile, Stefanos Tsitsipas coasted past defending champion Alexander Zverev in straight sets to advance to the last four of the ATP.

The Greek broke his opponent three times in the match to seal a 6-3, 6-2 win and advance to the semifinals.