From Development Draft to the Show
Kodai Senga was selected in the fourth round of the 2010 development draft by the SoftBank Hawks, an unknown high schooler from Aichi Prefecture. Starting in the third team of SoftBank's pioneering three-tier farm system, he earned a roster spot in 2012 and debuted in 2013. His 150+ km/h fastball and sharp forkball quickly drew attention, making him the ultimate success story of SoftBank's development system.
The 'Ghost Forkball'
Senga's signature pitch, the 'ghost forkball,' dropped approximately 50cm with velocity around 140 km/h, making it nearly indistinguishable from his fastball until its sudden plunge. The pitch gained national fame during the 2018 Japan Series, where it devastated the Hiroshima lineup. His career strikeout rate exceeded 10.0 per nine innings, elite by any standard.
Find Kodai Senga books on Amazon
SoftBank's Ace
Senga established himself as ace with 13 wins in 2019 and contributed to four consecutive Japan Series titles through 2020. His NPB career totals of 76-46 with a 2.59 ERA are remarkable for any pitcher, let alone a development draft pick. His success influenced development strategies across NPB.
The Mets Challenge
Using international FA rights rather than posting, Senga signed a five-year, $75 million deal with the New York Mets in 2023. His debut season produced 12-7 with a 3.38 ERA, proving the ghost forkball works against MLB hitters despite shoulder issues limiting his availability. From development draft fourth-rounder to MLB, Senga's journey is one of NPB's most dramatic success stories.
SoftBank's Three-Tier Farm and Development Philosophy
SoftBank fully operationalized NPB's first three-tier farm system in 2011, providing development-roster players with abundant game experience. Senga threw over 100 innings annually in the third team, building command and stamina. Under the traditional two-tier system, development players had limited game opportunities and slower growth, but the third team's independent league exchanges and instructional leagues filled the gap. Beyond Senga, the system produced starters such as Takuya Kai and Taisei Makihara, making SoftBank's three-tier model a driver of development reform across NPB. Senga stands as the clearest proof of what happens when institutional design and individual talent align.
The 2022 NPB Finale: A Career Culmination
In his final NPB season of 2022, Senga posted 11 wins, 6 losses, a career-best 1.94 ERA, and 146 strikeouts. His forkball yielded a batting-average-against below .100, continuing to generate swings and misses despite years of hitter adjustments. Although SoftBank missed the pennant that year, Senga individually reached peak form, preparing for international free agency. Over ten years in Japan, he continuously fine-tuned his fork grip and shifted his release point by centimeters, arriving at an ultimate specification of 145+ km/h velocity with over 55cm of vertical drop just before departing for the United States.
How the Development Draft Transformed NPB Scouting
Introduced in 2005, the development draft opened doors for players outside the active roster limit. Senga's success is the system's iconic achievement, often discussed alongside Tetsuto Yamada of Yakult as a comparison of different pathways to stardom. After Senga, development-draft pitchers earning top honors expanded to include Shuta Ishikawa (SoftBank, 2020 most wins) and Hiroshi Kaino (SoftBank, 2019 Rookie of the Year). For clubs, the system allows securing prospects at reduced signing bonuses; for players, it offers a meritocratic path regardless of academic background or high school fame. The lineage of development-draft aces that Senga pioneered has fundamentally transformed how NPB discovers talent.