JAPAN.LEAGUEINC.
Company

Company

Japan League Co., Ltd. is a sports company founded in 2022 to give athletes another shot at the game they love.

2022
ESTABLISHED
Message from CEO
Representative Director
Issei Washizaki
We stand with the players who fell short—
and we're rebuilding the business of sport.

After a year of trying, I finally made my college baseball team—only to run straight into the limits of my own ability. I trained harder than anyone; that much I could say with confidence. And still, I wasn't even close.

I never made it off the bench. It was in that moment of frustration that I discovered the winter leagues in America. I didn't earn a contract—but that bitter feeling finally found peace, and I was able to close the chapter on my life as a player.

That experience is what led me to launch a winter league here in Japan.

Today, I run this business with a clear mission: to stand with the players who fell short, and to rebuild the business of sport.

Issei Washizaki, Representative Director — Japan League Co., Ltd.
BIOGRAPHY

Born in Fukuoka · Second baseman · Right-handed batter / right-handed thrower

  • 2007Entered Saga Prefectural Saga Nishi High School
  • 2011Entered Keio University, Faculty of Environment and Information Studies
  • 2016Participated in the California Winter League
  • 2016Joined Fast Retailing Co., Ltd.
  • 2022Founded Japan League Co., Ltd.
Staff
Executive Vice President & COO
Haruki Kawagoshi

Born in Saitama · Pitcher / third baseman · Right-handed

2009
Entered Keio Shiki Senior High School
2012
Entered Keio University, Faculty of Business and Commerce Joined the varsity baseball team
2016
Participated in the California Winter League
2016
Joined Tokyo Tatemono Co., Ltd.
2025
Joined Japan League Co., Ltd.
JWL & JSL — General Manager
Rin Ohno

Born in Okinawa · Pitcher / position player · Right-handed

1989
Entered Okinawa Prefectural Okinawa Suisan High School Runner-up at the National High School Baseball Championship two years in a row
1992
Entered Kyushu Kyoritsu University, Faculty of Economics Captain of the baseball team; played at the All-Japan Jingu Tournament
1995
Drafted (5th round) by the Yomiuri Giants
2001
Traded to the Fukuoka Daiei Hawks
2010
Founded the Uruma Higashi Boys
2019
Founded the NPO Yakyu Mirai.Ryukyu
2022
Appointed JWL General Manager
JWL & JSL — Okinawa Representative
Manato Chibana

Born in Okinawa · Pitcher · Right-handed

2004
Entered Okinawa Prefectural Urasoe Commercial High School Won the prefectural championship
2007
Entered Asia University, Faculty of Business Administration Captain of the baseball team (pitcher)
2011
Joined Energic Inc. (JABA Okinawa) Played adult-league baseball
2019
Worked in trading and real estate Coaching for youth baseball and the Okinawa Boys League Select team
2022
Appointed JWL Vice President
JWL & JSL — Head of Operations
Hanako Oka

Born in Fukuoka · 100m hurdles · Right-handed

2009
Entered Fukuoka Prefectural Yame High School
2013
Entered Doshisha University, Faculty of Global and Regional Studies
2017
Joined Fukuoka SoftBank Hawks Corp.
2023
Joined the Vancouver Canucks (NHL)
2025
Joined Japan League Co., Ltd.
Overview

Company
at a glance

Company name
Japan League Co., Ltd.
Founded
March 2022
Representative Director
Issei Washizaki
Address
2F, 1-7-8 Chuo, Okinawa City, Okinawa
What we do
Running the Japan Winter League and Japan Summer League, supporting athletes into their second careers, and related work.
CONTACT
Get in touch

Build the next chapter
with us.

Partnerships, sponsorship, player applications, press — whatever brings you here,
we'd be glad to talk.

CONTACT US