Moise Kouame announced himself on a big stage at the Miami Open with a first-round victory that carried immediate historical weight. The newly 17-year-old Frenchman, who celebrated his birthday on March 6, defeated American Zacahary Svajada 5-7, 6-4, 6-4 to become the youngest man to record a match win at Masters 1000 level since Rafael Nadal in 2003 and the fourth-youngest in the category’s history.

Kouame’s win also marked the first tour-level victory for an ATP player born in 2009. The 6-foot-3 right-hander, ranked No. 385 entering the tournament, survived a tense moment at 3-4 in the second set when he fell behind 0-40 and was five points from defeat. He then won 14 of 16 points from that position to force a decider and battled through cramps late in the match to close out a two-hour, 17-minute contest.

After the win, a stunned Kouame could not hide his emotion and smiled broadly as he reflected on the result. “It’s big, it’s huge,” he said. “It’s cool because I’m on the list with all these champs,” he added. “It brings me a lot of confidence and shows me I’m on the right path, I just need to keep working.”

Kouame spoke plainly about his ambitions, calling his goals “big” and “huge” and expressing his desire to reach the sport’s summit. “I hope one day it won’t be dreams and it will be reality. This is really what I’m working for,” he said.

The victory drew attention from established figures in the sport. Kouame revealed that Novak Djokovic sent him a congratulatory message on Instagram. “I’m so nervous; I don’t know what to answer!” he confessed. “Imagine having your idol DM you like this … this is too much for me! It’s the coolest thing ever.”

Jakub Mensik enters this Miami title defense with a methodical, numbers-first approach that began in his junior years. He said he feels “a lot of goosebumps” as he prepares to defend the trophy he won at Hard Rock Stadium last year.

Mensik can still recall the tactical notes from that run. He reviewed his match against Roberto Bautista Agut and the adjustment he made to face Roman Safiullin, prioritizing control in the early exchanges. “Every percent makes a big difference in this type of game,” he explained during an info session for the ATP’s TennisIQ stats platform. “I knew that I needed to be good in the beginning of the rallies—so from zero to four (shots)—which I dominate really, really well. So I knew that I had to keep (Bautista Agut) in this kind of game.

“I knew that Safiullin is a guy that is hitting the ball very hard, but when I keep him in the longer rallies his Baseline Points Won was 45 percent. So at the time, I was like, Okay I want to stay with him in the baseline battles.’”

The analytic habit traces to his father, Michal, an IT professional who built a custom platform to track serve and return numbers, serve-plus-one shots, shot selection and court zones from Mensik’s junior days through his rise. “You would be surprised. There was serve and return numbers, serve plus one shots, shot selections,” Mensik said of the platform. “We implemented zones as well… There was a lot of things.

“My father used to be there for many, many hours a day. But it was the basic information that I needed when I was a junior and starting to play pros. That was the most necessary thing that I needed.”

Now ranked No. 13 with more than $5.5 million in career prize money, including $2.6 million in 2025, Mensik works with coach Tomas Josefus, mental coach Dragan Vujovic and fitness coach Jan Pospisil. After cutting his 2025 season short with a foot injury and withdrawing from Basel, the Paris Masters and the Next Gen ATP Finals, he opened 2026 by winning in Auckland, then withdrew from the Australian Open before a fourth-round match against Djokovic with an abdominal issue. He returned in Doha and beat world No. 2 Jannik Sinner in the quarterfinals.

Facing substantial points to defend and the chance to join the few who have retained Miami, Mensik remains measured. “I’m not trying to put too much pressure on myself—even from the outside, from the media, the audience and anyone who is talking about it,” Mensik said.

“I’m just trying to focus on myself. Of course, (the pressure of defending a big title) is something new, but it’s something that I’m really excited for and something that I want to have in my career.”

After Indian Wells, the tour moved to the Miami Open for the second leg of the Sunshine Double, where conversation turned to whether recent champions can follow up. The hosts returned to discuss how Jannik Sinner and Aryna Sabalenka might back up BNP Paribas Open titles in Miami and whether either can complete the double. Odds observed in the field suggested close favorites for the repeat, and Andrea Petkovic offered a tactical read on the conditions.

“I actually think both of them, with their playing styles, have done the hard part,” said Petkovic. “The easier tournament for them to win, strictly game style-speaking, is the Miami Open. Because [the court is] quicker, the bounce is lower—this is both what they usually prefer.” Petkovic also flagged recovery as a key variable. “Traveling so late to a tournament without many more days to adapt, that’s going to be the big question mark,” says Petkovic.

The show also turned inward, examining the role of the high-performance coach for the top-ranked player on the WTA Tour. Jason Stacy, who travelled quickly from the winner’s circle at Indian Wells, described his remit within Team Sabalenka. “My role is making sure doing the right things at the right time,” Stacy says. He explained how responsibilities have evolved: “I used to do a lot of the physio and massage work, now we have Helen [Murawska] on board. I don’t do any of that, really; her and I talk about what’s working, what’s not working, what we need to do.”

Stacy emphasised the emphasis on process and fit. “It’s not just, do you have the knowledge and experience,” he says, “it’s also who you are as a person—do you fit in with the team?” The ultimate objective, he said, is straightforward: “from a physical standpoint, a mental standpoint, Aryna has everything she needs to be able manage her energy well enough to perform.” Jason Stacy, Aryna Sabalenka’s high-performance coach, is seeing their hard work paying off.