“From around the 2023 tournament, the rosin changed, and I felt like it started to actually help with grip. Back in my time, though, the rosin didn’t match the official ball at all—the ball would just slip.
It wasn’t just pitchers; fielders were conscious of it during throws too.
I struggled with my slider. It would slip, or not break at all, and I couldn’t throw it along its usual trajectory. So I had to change the grip and release on my cutter, modifying it to act like a slider. I often adapted other pitches when my breaking balls weren’t working, so that experience helped.
Still even after making the adjustments, I thought, ‘This is tough,’ all the way through the tournament. The leadoff home run I gave up in the final against Cuba? That was off my makeshift slider.”
With his signature slider uncertain, Matsuzaka delivered his best pitching against Mexico, helping secure the first tournament championship.
“After a walk-off loss to the U.S. in the previous game, I started under a tense atmosphere. In the second inning, I had runners on base, but Satozaki skillfully drew a hitter out and it became a rundown between first and second. However, second baseman Tsuyoshi Nishioka (41) made a bad throw, leaving a runner on third with one out.
Considering the flow of the tournament, I couldn’t allow a run there. I thought, ‘I absolutely have to get this out,’ and threw eight consecutive inside fastballs.
I recently talked with Satozaki, and he said, ‘The fastball was so good that I called for it without hesitation.’ Spectators may have thought, ‘That’s risky,’ but I didn’t feel any hesitation. I didn’t shake my head at the signs even once.
It wasn’t about data or theory; it was about the sense we shared when facing the batter in that moment. That’s why I could throw confidently and decisively. My fastball was that good in that tournament. Even if it’s a slider, curve, or changeup, having one reliable pitch makes things manageable. Conversely, if you don’t know which pitch to rely on, it can be very difficult.”
Looking ahead to the current tournament, the MVP right-hander points to hard-throwing lefty Yusei Kikuchi (34) as a key pitcher for the Samurai Japan staff.
“Whether he starts or comes in as a second starter, he throws such a strong ball that using him later in critical situations could also work. I basically see him as a starter, but depending on how he’s used, he could be very interesting.
I’m not nervous, but I loved the tension of international tournaments, which you don’t get in the regular season. The joy of wearing the Japan uniform and playing. Japan gets excited every time, which really boosts motivation.
Within that unique atmosphere, you see what you can and cannot do. I’ve seen players struggle, but those intense, condensed experiences are rare. Both the good and the tough experiences will serve me well in my baseball career—they’re treasures.”