| Tuesday, December 13th , 1955 | Signed free agent SP Otoya Maehara to a minor league contract with a major league option. | Released SP Otoya Maehara. | Wednesday, December 7th , 1955 | Signed free agent LF Kanbu Ibe to a minor league contract. | Tuesday, December 6th , 1955 | Signed free agent RP Nagahisa Ogawa to a minor league contract with a major league option. | Released RP Etsuji Tsruta. | Saturday, November 12th , 1955 | Released 3B Yukio Okuda. | Friday, November 11th , 1955 | Signed free agent 3B Yukio Okuda to a minor league contract. | Friday, October 21st , 1955 | Signed free agent SP Hiroiaki Kai to a minor league contract with a major league option. | Saturday, October 15th , 1955 | Signed General Manager Nariaki Matsumoto to a 2-year, $1,755 per year contract. | Monday, October 3rd , 1955 | Signed free agent SP Kimihiko Mori to a minor league contract with a major league option. | Released SP Kimihiko Mori. | Saturday, October 1st , 1955 | Released SP Hiro Shima. | Signed free agent SP Otoya Maehara to a minor league contract. | Signed free agent SP Aguri Honda to a minor league contract. | Sunday, September 25th , 1955 | Signed free agent SP Toshimasa Kobayashi to a minor league contract. | Saturday, September 24th , 1955 | Signed free agent SP Matsuta Mori to a minor league contract with a major league option. | Released SP Sueichi Kawamoto. | Sunday, September 18th , 1955 | Signed free agent CF Seiesnsui Nakatsuka to a minor league contract. | Wednesday, September 14th , 1955 | Signed free agent C Heikichi Nakamura to a minor league contract. | Signed free agent RP Kunimitsu Nakao to a minor league contract. | Thursday, September 8th , 1955 | Signed free agent 1B Morimasa Fujimoto to a minor league contract. | Friday, August 26th , 1955 | Signed free agent SP Otoya Maehara to a minor league contract. | Sunday, August 21st , 1955 | Signed free agent SS Kotaro Takai to a minor league contract. | Friday, August 19th , 1955 | Signed free agent RP Zenichiro Tsuji to a minor league contract. | Tuesday, August 16th , 1955 | Signed free agent CF Kaori Arakawa to a minor league contract. | Saturday, August 13th , 1955 | Signed free agent SP Roka Harada to a minor league contract. | Signed free agent SP Aki Yamane to a minor league contract. | Friday, August 12th , 1955 | Signed free agent RP Yoshitaka Date to a minor league contract with a major league option. | Released RP Etsuji Tsruta. | Tuesday, August 2nd , 1955 | Signed free agent CF Kaori Arakawa to a minor league contract. | Monday, July 18th , 1955 | Signed free agent 3B Yukio Okuda to a minor league contract. | Signed free agent SP Takeshi Miyazaki to a minor league contract. | Sunday, June 26th , 1955 | Signed free agent RP Yataroh Niwa to a minor league contract with a major league option. | Released RP Yataroh Niwa. | Sunday, June 19th , 1955 | Signed free agent 1B Sueki Komatsu to a minor league contract. | Friday, June 17th , 1955 | Signed free agent LF Yoshinari Kawashima to a minor league contract. | Signed free agent SP Roka Harada to a minor league contract. | Signed free agent SP Aguri Honda to a minor league contract. | Monday, June 13th , 1955 | Signed free agent SP Etsuji Tsruta to a 1-year contract worth a total of $17,000. | Released SP Roka Harada. | Wednesday, June 8th , 1955 | Signed free agent SP Roka Harada to a minor league contract. | Sunday, June 5th , 1955 | Drafted 3B Ton Ueda in the 1955 first-year player draft (Round 1, Pick 12, 12th overall pick). | Drafted SP Toshitada Morino in the 1955 first-year player draft (Round 2, Pick 12, 24th overall pick). | Drafted RF Kosho Murakami in the 1955 first-year player draft (Round 3, Pick 12, 36th overall pick). | Drafted CF Fujio Yoshioka in the 1955 first-year player draft (Round 4, Pick 12, 48th overall pick). | Drafted SS Yasahiko Kato in the 1955 first-year player draft (Round 5, Pick 12, 60th overall pick). | Thursday, May 12th , 1955 | Signed free agent SP Hiro Shima to a minor league contract. | Wednesday, May 4th , 1955 | Signed free agent RP Taisuke Miki to a 1-year contract worth a total of $3,040. | Released RP Hiro Shima. | Sunday, April 3rd , 1955 | Placed SP Ryusuke Maeda on the 60-day injured list. | Sunday, March 27th , 1955 | Signed free agent CF Ikumasa Yasuhara to a minor league contract. | Friday, March 25th , 1955 | Signed free agent SP Yukinori Imai to a minor league contract. | Friday, February 25th , 1955 | Signed free agent SP Yukinori Imai to a minor league contract with a major league option. | Released SP Yukinori Imai. | Monday, February 7th , 1955 | Signed free agent SP Hiro Shima to a minor league contract. | Wednesday, February 2nd , 1955 | Signed free agent RP Kunimitsu Nakao to a minor league contract with a major league option. | Released RP Kunimitsu Nakao. | Monday, January 24th , 1955 | Signed free agent SP Jobu Kawamoto to a minor league contract. | | |