Watch ATP 250 Stuttgart — Semi-Finals Free.

What's at Stake

The semi-finals of the Boss Open represent a critical juncture in the grass-court season as players compete for a spot in the championship match in Stuttgart. Beyond the ATP 250 title points, this stage serves as a vital barometer for form and confidence ahead of the upcoming Grand Slam at Wimbledon.

Form Guide

The top seeds have navigated the early rounds with efficiency, adapting quickly to the low-bounce and high-speed conditions of the German grass courts. Momentum is high for the remaining contenders, who have relied on dominant service games and aggressive net play to secure their places in the final four.

Key Players to Watch

• Alexander Zverev — The home favorite looks to utilize his powerful serve and baseline consistency to reach the final on native soil.
• Ben Shelton — The young American’s explosive lefty serve and athletic volleys make him a natural threat on this fast surface.
• Jan-Lennard Struff — A local specialist known for his heavy hitting, he remains a dangerous opponent capable of upsetting the higher-ranked seeds.

Prediction

Expect a highly competitive day of tennis where serve dominance will likely lead to multiple tie-break sets. Alexander Zverev is the slight favorite to advance to the final due to his experience in high-pressure moments and strong support from the local crowd.