Tennis is often regarded as a premier athletic activity for several reasons. First, it provides a full-body workout, enhancing muscular strength and increasing flexibility. Second, it’s a high-intensity game that tests both aerobic and anaerobic fitness. But playing tennis is easier said than done. The biggest challenge many players face is finding consistent sparring partners. With this in mind, Aceii Sports, a Chinese robotics and sports technology company, has developed the “Aceii One: Your AI Tennis Hitting Partner.”
According to the makers, the primary goal of this innovation is to provide tennis enthusiasts with a reliable practice partner. Much like Acemate, the Aceii One is an AI-powered ball-shooting machine that will assist you during serves, volleys, and groundstrokes.
Beyond just ball-hitting, the device also schedules practice sessions, manages availability, and even tackles the unpredictability that comes with human opponents. To put that into context, Aceii One serves as both a ball machine and a personal AI tennis coach, all rolled into one sleek, portable device. In short, if finding a consistent tennis partner is a challenge, Aceii promises to be both your training companion and your formidable opponent.

As highlighted by New Atlas, Aceii One consists of a main robotic unit with two Core and four Omni wheels. Alongside are two vertically aligned 1080p/60fps cameras for movement on the turf. Other units include a detachable ball bag that sits on top of the main unit and can hold up to 120 tennis balls. When not in use, the entire unit can be folded down to the size of a wheeled suitcase for easy maneuverability.

So how does it work? The makers explain that the device is powered by advanced machine learning algorithms, which, combined with computer vision, enable it to track your swings, footwork, and ball trajectory in real-time. The result is a personalized training session that allows you to perfect your topspin forehand or refine your defensive lobs.
The machine comes with a companion app, available on both iOS and Android. This app offers over 50 pre-loaded drills, ranging from baseline rallies to net approaches, and allows you to create custom routines. The app also tracks your progress with gamified leaderboards and provides real-time voice feedback, offering coaching tips such as refining your backswing or adjusting your serve stance, based on data from thousands of professional matches.
Another standout feature of the Aceii One is its ease of use. Simply attach the units, sync them with the app, and within 30 seconds, it scans your court and begins delivering tailored drills. You’ll also receive detailed performance reports and video breakdowns to highlight areas of strength and improvement. As for the battery backup, the company mentions that a one- to two-hour charge of the lithium battery should be good for two hours of runtime if the robot is moving, or eight hours if it’s stationary. Currently available on preorder through Kickstarter, the Aceii One can be yours at a Super Early Bird price of $1,199.

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