Giants’ 22-Year-Old Ryusei Mitsuzuka Stuns Farm League with Laser Home Run as Fans Call for Fast-Track Promotion

September 4, 2026

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Summary

A 22-year-old Yomiuri Giants outfielder, Ryusei Mitsuzuka (三塚琉生), crushed a low-trajectory home run in a farm game against Orix on the 3rd, sparking fan calls for an immediate first-team promotion. The line-drive blast came off a 141 km/h pitch and barely climbed before clearing right field. Mitsuzuka is batting .254 with 6 HR, 30 RBIs, and a .735 OPS in the farm league this season. He joined the Giants as a developmental pick in 2022 and earned a full roster spot last year, appearing in six first-team games. Fans compared his swing to former Giants standout Takayuki Shimizu, praising the compact power. The performance adds momentum to Yomiuri’s youth movement as they weigh timing versus seasoning. For international readers, it’s a glimpse into Japan’s well-structured path from farm to first team. Curious how close he is to a call-up? Check the full story for context and what it could mean for Tokyo Dome lineups. Click through to see why Giants fans think the future is secure.

Tokyo — A rising Yomiuri Giants outfielder is forcing his way into the first-team conversation. On the 3rd, Ryusei Mitsuzuka (三塚琉生), a 22-year-old in his fourth year out of high school, launched a startlingly low-trajectory home run to right in a farm-league game against the Orix Buffaloes. The line-drive blast — his sixth of the season — set social media alight, with supporters urging the Giants to “bring him up to the big club now.”

A bullet to right that shocked the stands

Batting sixth as the designated hitter, Mitsuzuka jumped on a 141 km/h (about 88 mph) pitch from Orix right-hander Kyosuke Saito in the fourth inning, with the Giants’ farm team already up by three. The ball never seemed to climb, instead carrying on a rope until it cleared the right-field fence — the kind of “laser” homer that looks impossible until it’s gone. Fans reacted in real time: “That angle still got out?” and “What a monstrous liner,” wrote commenters who watched the ball pierce the night.

Who is Ryusei Mitsuzuka?

Mitsuzuka joined the Yomiuri Giants as a developmental (ikusei) draftee in 2022 out of Kiryu Daiichi High School, a program known for producing tough, technically sound players. His progress has been steady: he earned a full roster contract last June and briefly debuted in NPB’s first team, appearing in six games. The small sample was unforgiving — 12 at-bats, no hits, eight strikeouts — but that taste of top-flight pitching has been part of a broader learning curve.

The 2024 numbers — and what they signal

So far this season in the farm league, Mitsuzuka is batting .254 (50-for-197) with six home runs, 30 RBIs, and a .735 OPS. For a 22-year-old adjusting to professional velocity and sequencing, that line points to usable pop and room to grow in on-base skills. The headline is the quality of contact: the “low-arc” drive he uncorked against Orix is the sort of swing that suggests emerging bat speed and a barrel path that can play at higher levels.

Echoes of a Giants great

Some supporters drew nostalgic comparisons to former Giants outfielder Takayuki Shimizu, renowned for his compact stroke and line-drive power. “It looked like a Shimizu-style homer,” wrote one fan, while others dubbed Mitsuzuka a potential “Shimizu Takayuki II.” Those are big boots to fill, but the sentiment reflects a belief that Yomiuri’s pipeline is producing hitters with classic Tokyo Dome-friendly trajectories.

Inside Japan’s developmental pipeline

NPB’s ikusei system allows clubs to sign and develop raw talents outside the standard 70-man roster, giving prospects time to refine skills in the farm league (ni-gun) before promotion to the first team (ichi-gun). The Giants — Japan’s most storied franchise — have leaned on this pathway to refresh a roster that remains under intense national scrutiny. When a young player shows sustained production and the underlying tools (bat speed, approach, defense), a mid-season elevation is common, though Yomiuri typically balances urgency with tradition: earn it, then seize it.

What a call-up would mean

For a team that prizes both results and spectacle, inserting a hot-handed outfielder can energize a lineup and fan base. Mitsuzuka’s six homers and growing confidence suggest the potential to contribute in pinch-hit roles or late-game matchups, even as he continues to refine plate discipline. Whether the front office moves quickly or opts for more seasoning, the message is clear: Yomiuri’s future in the outfield looks promising — and competitive.

Why this matters to international fans in Japan

Baseball is woven into Japan’s cultural fabric, and the Giants — who play at Tokyo Dome — are central to that story. For expats and visitors, farm-league games offer an intimate, affordable way to watch prospects like Mitsuzuka up close, while first-team fixtures deliver the full Tokyo game-day experience. The Orix Buffaloes, recent Pacific League powerhouses, provide top-tier opposition throughout the system, sharpening talent on both sides. As Japan continues to develop world-class players, keeping an eye on the farm is often how you spot the next star before everyone else does.

For now, the case for Mitsuzuka is built on bat speed, trajectory, and timing — all improving. If the “bullet” he hit against Orix becomes a pattern rather than a highlight, the chorus from fans — “Promote him before the season slips away” — will be hard to ignore.