Zverev Reaches Fifth Straight Masters 1000 Semifinal, Finally Avoids Sinner

Key facts

• Alexander Zverev beat Flavio Cobolli 6-1, 6-4 in the Madrid Open quarterfinals.
• Zverev lost to Cobolli in the Munich Open semifinals 12 days earlier.
• He is the fourth man since 1990 to reach the semifinals of the first four Masters 1000 events in a season.
• Zverev has lost all three previous semifinal meetings with Jannik Sinner this year.
• He will face 21-year-old Belgian Alexander Blockx, ranked 69th, in the semifinals.
• Blockx defeated defending champion Casper Ruud 6-4, 6-4 to reach his first Masters 1000 semifinal.
• Zverev's 179th clay-court tour-level victory surpassed Philipp Kohlschreiber for the most by a German man in the Open Era.
• Zverev hit 12 aces and had a serve quality rating of 9.5 in the match.

A Dominant Display Against a Familiar Foe

Alexander Zverev powered into the Madrid Open semifinals on Thursday evening with a 6-1, 6-4 victory over Flavio Cobolli, avenging his loss to the Italian in the Munich Open semifinals just 12 days earlier. The two-time Madrid champion lost only seven of 39 points behind his first serve and struck 12 aces, earning a serve quality rating of 9.5. He jumped out to a 5-0 lead and never relented, finishing with a +4 winner-to-unforced-error differential (23 winners, 19 unforced errors). “Flavio is one of my favourite guys on the tour. I have a great relationship with him and a great relationship with his father. This is sport… Sports can change very quickly. In Munich, he played an amazing match, and I did not play a very good match. Today, it was maybe the opposite,” Zverev said on the ATP’s official website. The win improved Zverev’s head-to-head record against Cobolli to 3-1 and marked his 25th victory of the season.

Joining an Elite Group of Masters 1000 Semifinalists

By reaching the semifinals in Madrid, Zverev became the fourth man since 1990 to reach the semifinals of the first four ATP Masters 1000 events in a single season. He joins Roger Federer (2006), Rafael Nadal (2010, 2011), and Jannik Sinner (2026) in that exclusive club. The German world number three had previously made the semifinals in Indian Wells, Miami, and Monte-Carlo this year, losing each time to Sinner. “It is amazing but, of course, I need to get past this stage now,” Zverev said, acknowledging his aim to advance further. The streak of five consecutive Masters 1000 semifinals dates back to the 2025 Paris Rolex Masters.

A New Challenger: Alexander Blockx Awaits

For the first time in his run of five straight Masters semifinals, Zverev will not face Jannik Sinner. Instead, he will meet 21-year-old Belgian Alexander Blockx, ranked 69th in the world, who upset defending champion Casper Ruud 6-4, 6-4 to reach his first ATP Masters 1000 semifinal. Blockx’s victory over Ruud, the world number five, marked a significant breakthrough for the young player. Zverev’s path to the final now appears more open, but Blockx has demonstrated he can beat top-tier opponents on clay. The semifinal will test Zverev’s ability to capitalize on a draw that has finally removed his nemesis from his side of the bracket.

Clay-Court Milestone: Most Wins by a German in Open Era

Zverev’s victory over Cobolli was his 179th clay-court tour-level win, surpassing Philipp Kohlschreiber for the most by a German man in the Open Era. The milestone underscores Zverev’s dominance on the surface, where he has won two Madrid titles and the 2020 US Open (on hard courts) but has yet to claim a Roland Garros crown. His clay-court prowess has been a cornerstone of his career, and the Madrid tournament has historically been a stronghold for him.

The Sinner Shadow and Zverev’s Quest for a Title

Despite his consistent deep runs, Zverev has not beaten Jannik Sinner since the 2023 US Open. The Italian has defeated him in three consecutive Masters semifinals this year, and Sinner remains the dominant force in the ATP. If both players win their semifinals, they would meet in the Madrid final, giving Zverev a chance to break his losing streak. However, Sinner first must overcome his own semifinal opponent, while Zverev focuses on Blockx. Zverev’s comment, “I need to get past this stage now,” reflects the pressure to convert semifinal appearances into titles. His last Masters 1000 title came in Madrid in 2021, and he has not won a tournament since the 2024 Paris Masters.

What Lies Ahead: A Potential Final Showdown

The Madrid Open semifinals are set, with Zverev facing Blockx and Sinner taking on his opponent. Should Zverev advance, a final against Sinner would be a high-stakes rematch. For now, Zverev must avoid looking past the unseeded Belgian, who has already proven he can topple a defending champion. The German’s serve and experience give him the edge, but Blockx’s fearlessness could pose a threat. Zverev’s season has been defined by near-misses against Sinner. Madrid offers a chance to rewrite that narrative, but first he must handle the business at hand.

A Test of Resilience and Ambition

Zverev’s run in Madrid highlights his consistency at the highest level, but the absence of a title this season weighs on his campaign. His ability to rebound from the Munich loss to Cobolli shows mental fortitude, yet the ultimate measure will be whether he can break through against the top tier. With Sinner looming as a potential final opponent, Zverev’s path is clear: beat Blockx, then confront his nemesis. The tennis world watches to see if the German can finally turn semifinals into silverware.

The bottom line

• Zverev joins Federer, Nadal, and Sinner as the only men since 1990 to reach the first four Masters 1000 semifinals in a season.
• He avenged a recent loss to Cobolli and now holds a 3-1 head-to-head record.
• Zverev’s 179th clay-court win is a German Open Era record.
• He has lost all three previous Masters semifinals to Sinner this year.
• His semifinal opponent, Alexander Blockx, upset defending champion Casper Ruud.
• A potential final against Sinner would be a chance to break a losing streak dating to the 2023 US Open.