This week’s training post is another installment inspired by the Netflix docuseries Carlos Alcaraz: My Way. In a short clip shown on the show, Alcaraz is shown performing a variation on a common mobility drill known as a cannonball roll. (To answer the obvious question, the song “Cannonball” by the Breeders was indeed the mental soundtrack looping in my head the entire time I was writing this post.)
The cannonball roll is a simple exercise. The athlete tucks the knees tightly into the chest with both arms, essentially transforming into a compact ball. From there, the body rocks gently back and forth along the length of the spine. At first glance, it resembles something out of a kids’ gymnastics class, but the movement occasionally shows up in dynamic warm-up sequences because it accomplishes so much at once. It loosens the back, hips, and core while also reinforcing overall body control and awareness. It’s a sneaky way to activate the stabilizing muscles that tennis players rely on when competing.
Alcaraz’s version, however, adds an intriguing twist. Instead of wrapping his legs with both arms, he clasps them with only one, while his other hand is tucked behind his head in a sit-up position. The change may seem minor, but it significantly alters the mechanics of the drill. The extra length created by the free arm alters balance and body rotation, demanding more from the core, particularly the obliques.
I gave this variation a test run in my home gym this past weekend and can confirm that it engages the side muscles with greater intensity than the standard version. It’s also a surprisingly effective mobility drill, especially for someone at my age who values fluidity and rotational strength as much as raw stability. I ended up doing a lot of these exercises last week while researching the movement, and the more I tried them, the more I appreciated their training value.
For recreational players, this is one of those simple exercises that yields a significant payoff. It challenges coordination, improves mobility, and builds strength in the muscles that power twisting and turning on the court. If you’re looking for an easy addition to your routine, consider adding cannonball rolls—Alcaraz-style—to your warm-up or core work.
