How will Sascha respond to the Madrid debacle?
Alexander Zverev has had a strong 2026, reaching at least the semifinals in all five Grand Slam tournaments. However, when he finally made it to the final in Madrid, he suffered a crushing 0-2 defeat against Jannik Sinner (1-6, 2-6), in which the German No. 1 didn’t stand a chance. This makes it all the more intriguing to see how Sascha will fare in Rome when he faces an old acquaintance. Generally speaking, in the match between Daniel Altmaier and Alexander Zverev, the bet should be on the Hamburg native advancing. Still, it remains to be seen whether Altmaier, who is particularly strong on clay, might pull off a surprise.
In doing so, the Kempen native, who has already played his first match in the Eternal City, once again demonstrated his ability to stage comebacks. Against Zhizhen Zhang, Altmaier fought back after falling behind 0-1 in sets, even fending off two match points at 3-5 in the second set, and ultimately won the match. The 27-year-old has mostly come up short against the top stars of the ATP Tour. However, over the past twelve months, he has won 22 percent of all sets against top-10 players.
If we exclude hard courts and grass—surfaces on which the world No. 64 traditionally doesn’t perform too well—that percentage rises to 42 percent on clay. If we set the probability of Altmaier winning a set against Zverev at around 35 to 40 percent, that’s already enough to create value on the betting slip due to the high odds. From a mathematical standpoint, therefore, the bet to recommend is that Sascha won’t secure a clean 2-0 victory in the all-German matchup.
Even if the player from Kempen does manage to win a set, it would still be a long road to victory against the German number one. Sascha is seeded second in Rome and, although he has yet to win his first singles title in 2026, he has rarely faltered against players outside the top 20 so far. Given this context, a 2-1 victory for the Hamburg native would remain the most likely outcome even if Altmaier were to win a set, so the odds for that 2-1 win could also be utilized directly in the Daniel Altmaier vs. Alexander Zverev match.
Daniel Altmaier – Alexander Zverev Head-to-Head Record
Head-to-Head: 1:3
The German showdown between Daniel Altmaier and Alexander Zverev has taken place four times, and in three of those four matches, the German number one ultimately prevailed. Interestingly, clay-court specialist Daniel Altmaier didn’t record his only victory on clay, but rather defeated Sascha 2-1 on a hard court in Mexico in 2024.
The only clay-court match, however, was a one-sided affair. Zverev defeated the Kempen native 2-0 (6-3, 6-2) at the 2025 BMW Open in Munich.
Daniel Altmaier – Alexander Zverev Prediction
On paper, the prediction for Daniel Altmaier vs. Alexander Zverev naturally favors the world No. 3 advancing, who stands at 26 wins from 34 singles matches in 2026 and has already won the clay-court tournament in Rome twice (2017 and 2024) with a 79 percent win rate . However: After a historically poor start to the season, losing 17 sets in a row, Daniel Altmaier has clearly regained his form during the clay-court season and won four of his last seven singles matches. The fact that Sascha from Kempen has already defeated Zverev in one of their four previous meetings shows that he is not going into this match without a fighting chance.
Accordingly, there is significant value in the risky bet that the clay-court specialist from Kempen will win at least one set. Interwetten is offering odds of 3.20 for Daniel Altmaier to win at least one set against Alexander Zverev, which translates to a probability of 31.3 percent. Since we, in turn, give the world No. 64 a 35 to 40 percent chance of taking at least one set from Sascha, this bet has a positive expected value.
