Carlos Alcaraz said he arrives at the ATP Finals with "a lot of motivation" and is looking to make his mark in Turin next week.
Alcaraz, who claimed two grand slam titles at the French Open and Wimbledon this year, missed the event in 2022 after picking up an internal oblique muscle tear.
The Spaniard was then beaten in straight sets by Novak Djokovic in the semi-finals, though the Olympic champion has since withdrawn from this year's tournament with an ongoing injury issue.
Alcaraz, however, enters the year-end competition with a win-loss record of 52-11, with only Jannik Sinner (12) claiming more top 10 wins in 2024 than the 21-year-old (11).
“Last year was a difficult end of the year for me,” Alcaraz said. “I could not play at my best.
"The last two matches here were pretty good matches for me, but the previous two, three tournaments I didn’t play at my best, so I realised I had to change a little bit at this time of the year, which I did this year.
“I come here a little bit different. I approach this tournament a little differently, knowing there are things I have to change if I am to have a good result here and go far.
"Last year I didn’t start well from the first matches. I will try to play at the same level and will try to play good tennis. I am coming here with a lot of motivation.”
Alcaraz was drawn in the John Newcombe Group at the ATP Finals alongside Alexander Zverev, Casper Ruud and Andrey Rublev.
He will start against Ruud on Monday, but might face the strongest competition in the group from Zverev, who claimed his seventh Masters 1000 title at the Paris Masters.
Among the qualifiers for this year's event, Zverev (14) and Daniil Medvedev (11) are the only two to have recorded 10 or more match wins at the ATP Finals.
Alcaraz and Zverev have faced each other 10 times, winning five apiece, though Alcaraz has won the last two, including at Roland-Garros in the French Open showpiece.
“He is one of the toughest players in the world for sure,” Alcaraz said about Zverev.
“I think I return pretty well but he has a really big serve and plays unbelievable from the baseline, which makes him a really tough opponent to face.
“He has won more than 20 ATP Tour titles, lots of Masters titles. He wants a Grand Slam and I told him he is going to get it for sure.
"At the end of his career he will get at least one, let's see if more.
"He deserves it. He is a really hard worker. He has lifted the big trophies. I don’t like to face him because of his serves and shots, but I am trying to find the beauty of playing him.”