Last year, Daniil Medvedev was making his ATP Finals debut after an opening-round loss in Paris. This year, he returns as the world No. 4-ranked player in the world and the Paris champion.

Though his confidence will be high, he hasn't forgotten what happened in London last November. In round-robin action, the Russian held a 5-1 lead in the deciding set against Rafael Nadal and was one point away from his first-ever win over the Spaniard.

Instead, he would lose, 6-7 (3) 6-3 7-6 (4), and then leave London with an 0-3 record.

"It was a really good match until 5-1," Medvedev said. "But when you lose such match you can only say it was terrible not only match but terrible mental game from you, terrible tennis game, everything, because you cannot lose a match when you are up 5-1 and a match point. If you want to be on top, you cannot do it.

"But after, you will not also all your life just be there crying about this match."

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Medvedev added that he's been working on his mental game and though he sometimes experiences a meltdown, it's not as bad as before.

After not winning a match at the ATP Finals last year, Medvedev has a simple goal this time.

"No other goal than just to get some wins, because you play three Top-8 players, Top-10 players in the group," the 24-year-old said "That's the most important thing. No goal to really like win the tournament or anything. Just to win matches."

Round-robin action begins on Sunday in London.

Check out the latest episode of the TENNIS.com Podcast with Nick Monroe:

Medvedev heads 
into ATP Finals 
with one goal

Medvedev heads into ATP Finals with one goal