2004: Origins and formation During
Nippon Professional Baseball's (NPB)
2004 season, the
Osaka Kintetsu Buffaloes and the
Orix BlueWave announced that the two teams planned to merge into one for the start of the
2005 season. Both teams were in the
Pacific League (PL), and a merger between the two would result in a team imbalance with the PL's opposing league, the
Central League (CL). As a large number of players and personnel were expected to lose their jobs when the merger was finalized, the players conducted a
two-day strike on September 18–19, 2004. With the threat of further strikes looming, team representatives agreed to ease the rules of entry for new teams into NPB and that one would be allowed to join the following season. To fill the void left by the merger, internet services companies
Livedoor and
Rakuten submitted applications to form teams to be based in
Sendai,
Miyagi Prefecture. NPB selected Rakuten to create a Sendai-based PL team. The team would play its home games in
Miyagi Baseball Stadium, which was being renovated by Rakuten.
Marty Kuehnert and
Yasushi Tao were hired as
general manager and
manager, respectively, of their newly named "Tohoku Rakuten Golden Eagles" baseball club. and it is the only NPB team that includes the name of an entire Japanese region rather than only a prefecture or city. Instead of allowing the Eagles to draft players from all 11 NPB teams in an
expansion draft, The league's decision to employ an unequal dispersal draft to build the Eagles roster was blamed for the team's struggles to come. Rakuten was able to select former Buffaloes outfielder
Koichi Isobe because he was left unprotected by Orix after refusing to play for their newly formed team. Similarly, the Eagles were able to acquire Buffaloes star pitcher
Hisashi Iwakuma. Despite voicing that he had no intention of playing for the merged team, Orix still protected him. After, negotiations took place between Iwakuma and Orix that resulted in Orix trading him to the Eagles.
2005–2009: Debut and the road to the Climax Series Just over a month into their first season, the Eagles removed Kuehnert as general manager and demoted the head and batting coaches following a 6–22 start. The team finished 51.5
games out of first place and was the first NPB team in 40 years to lose over 90 games in a single season. As a result, ten players were released, and Tao was dismissed despite being signed to a three-year contract. In an otherwise disastrous season, one highlight was the team's home debut. Only five months after being awarded a franchise and without a preseason game as a dry run, Rakuten ran and operated the game smoothly in front of a packed, partially-renovated Miyagi Stadium. It was also estimated that the economic impact of the team in the Tōhoku region was $300 million in the first year. Rakuten planned to spend more than ¥1 billion on enhancing player training and about ¥3 billion on the continuing remodel of the ballpark. The stadium's off-season renovations expanded its seating capacity and added amenities. Mikitani looked to experience to lead the Eagles in its second season when he replaced first-time manager Tao with
Hall of Famer and veteran manager
Katsuya Nomura, signing him to a three-year contract. The team improved slightly over its first season, and
third baseman José Fernández went on to receive the Eagles' first
Best Nine Award in his first season with the team. However, the 2006 season also brought the Eagles' their first
no-hit loss, and they still finished last in the Pacific League. At the end of the season, Rakuten drafted pitcher
Masahiro Tanaka in the first round of the 2006 amateur high school draft. The Eagles' first real signs of improvement came during the 2007 season, the team's third.
Takeshi Yamasaki led the league in home runs through May and was named the PL MVP for the month of May, the team's first. He went on to be selected by fans to the Pacific League All-Star team for the 2007
All-Star Series, receiving the most votes of any player overall. With one of the All-Star games being played at the Eagles' home stadium that year, fans also voted in seven other Rakuten players, including rookie pitcher Tanaka. Rakuten finished the season with a losing record, however, for the first time they did not finish the season in last, instead finishing in fourth. The team finished fifth
next season, however, Iwakuma finished with the best
earned run average (ERA) and most wins in the league after struck by injuries the previous few years. At season's end, he was presented with his and the team's first PL
Most Valuable Player (MVP) and
Eiji Sawamura Awards. Rakuten secured second place in the Pacific League the next season and advanced to the
Climax Series for the first time. A pair of
complete game wins at home both by Iwakuma and Tanaka in the
first stage allowed the Eagles to advance but the team lost to the
Hokkaido Nippon-Ham Fighters in four games in the second stage, ending their season.
2010–2013: From disaster to championship Rakuten hired American
Marty Brown to succeed Nomura as manager. Even though Brown was signed to a two-year contract, he was let go a year later after the Eagles finished the
2010 season in last place. The club looked to
Senichi Hoshino next to turn the team around.
Kazuo Matsui and
Akinori Iwamura, both returning from playing stints in
Major League Baseball (MLB), were also added to the roster, and
Teppei Tsuchiya was named as the team's first ever
captain. On March 11, 2011, two weeks before the first game of
the season, the Tōhoku region was struck by the
largest earthquake in the country's history. The quake and the subsequent
tsunami devastated the region, including the Eagles' home city of Sendai. With the season opener postponed until April 12, the team continued to train in the
Kansai region because of the aftermath in Sendai. In addition to Rakuten holding fund-raising events, all 12 teams played charity games to help raise money for earthquake relief. Baseball returned to Sendai on April 12, when the Eagles played their first game at their home field. Furthermore, the final game of the 2011 All-Star Series was switched from
Tokyo Dome to Miyagi Stadium, the second time the Eagles hosted the event since 2007. Rakuten finished the 2011 season in fifth and again missed the playoffs. However, in addition to winning a Golden Glove and a Best Nine award, Tanaka was also named PL MVP of the month three times over the course of the season, a first for the Pacific League. After the season, Hisashi Iwakuma left the club to play in MLB. Rakuten went deep into the 2012 season as a playoff contender that year, but ultimately missed advancing to the Climax Series by one game and finished fourth. Before the start of the
2013 season, the Eagles signed former MLB players
Casey McGehee and
Andruw Jones. however, the next two months saw Tanaka winning consecutive PL MVP of the month awards, helping the club to finish June in second. He was awarded a record-setting five consecutive monthly MVPs from May to September. As league champions, the Eagles advanced directly to the final stage of the
Climax Series Final where they defeated the
Chiba Lotte Marines to advance to their first
Japan Series. Rakuten defeated the
Yomiuri Giants at home in the final game of a seven-game series to win the franchise's first and only
Japan Series championship. Game 6 of that Japan Series would also mark the only loss, including postseason games, that Tanaka would be given, after pitching a 160 pitch complete game in Game 6, but he followed it up in what would be his final game before being posted to the Yankees, a save in Game 7. Starting pitcher
Manabu Mima was named the
Japan Series MVP after the series, and Senichi Hoshino was given the
Matsutaro Shoriki Award. After the increased ticket demand during the 2013 season, an expansion project that increased Miyagi Stadium's maximum seating capacity above 28,000 was completed the next year.
2014–2017: Post-Tanaka struggles Following the championship-winning season, Masahiro Tanaka left the Eagles via the
posting system to play for the
New York Yankees, netting the team a $20 million transfer fee in return. Likewise, McGehee also left for MLB, and the team struggled in the years following their departures, finishing last the
next season. This disappointing finish prompted manager Senichi Hoshino to resign despite ownership wanting him to return for a fifth season. Rakuten promoted their farm team manager
Hiromoto Okubo to manager. At the end of July, hitting coach
Tomio Tashiro abruptly resigned and it was revealed that owner Hiroshi Mikitani had often been interfering in on-the-field decisions, such as dictating the
batting order. After Tashiro's resignation, Mikitani began conferring with field personnel before making any decisions, however the team again finished in last and Okubo resigned at the end of the season. The turmoil brought about by Mikitani taking the lead on baseball operations after Hoshino's unexpected resignation forced Rakuten to reevaluate how the team was managed and organized. It was decided that Hoshino, who had been retained as an Eagles vice chairman, would have full authority over baseball operations, similar to the role of an MLB
general manager. The team, hoping to avoid a third consecutive last-place finish, hired veteran PL manager
Masataka Nashida and signed free agent
Toshiaki Imae, a two-time
Japan Series MVP. During the season, Rakuten formed a training team to help further develop talent by playing against university, corporate, club, and independent teams. The Eagles avoided finishing the season in last, however they placed fifth and again missed the playoffs. The 2017 Eagles, however, found themselves battling the
Saitama Seibu Lions near the end of the season for second place. Ultimately, the team secured a first stage Climax Series berth against the Lions with a third-place finish. After losing the first game of the three-game series, Rakuten won the final two to defeat Seibu and advance to the final stage. Against the
Fukuoka SoftBank Hawks, the Eagles took the first two games of the series but were eliminated after the Hawks won the next three.
2018–present: Ishii as general manager and Tanaka returns Hoshino died in January 2018. Following the death, Rakuten erected a memorial flower stand in front of the newly named Rakuten Seimei Park Miyagi. Mikitani then announced that Hoshino's uniform number 77 would be retired permanently just before the start of the season. The Eagles struggled immediately that season, falling to 20 games under .500 by mid-June. Taking responsibility for the team's poor performance, Nashida resigned as manager that month and head coach
Yosuke Hiraishi acted as interim manager for the remainder of the season. The Eagles went on to finish the season in last, however before it was over Rakuten formally created a general manager (GM) position in Hoshino's absence. Former NPB and MLB pitcher
Kazuhisa Ishii was hired in the role to help coordinate the efforts of the front office and field management. Hiraishi was kept on as full-time manager for the
2019 season and led the Eagles to a third-place finish and a postseason berth. However, the team was defeated by the Hawks in the first stage. After the loss, another managerial change was made and
Hajime Miki was promoted from farm team manager. The Eagles failed to make the playoffs in the
pandemic-shortened 2020 season, and Ishii sent Miki back to manage the farm team after only one season. To replace him, Ishii appointed himself as manager starting with the
2021 season. Meanwhile, the conclusion of MLB's
2020 season marked the end of Masahiro Tanaka's seven-year contract with the Yankees. Instead of signing with another MLB team, Tanaka chose to return to play in Japan and signed a two-year contract with Rakuten. The next season, a third-place finish secured the Eagles a place in the
2021 PL Climax Series, however a loss and a tie against the Marines ensured that Rakuten would not advance to the final stage. ==Roster==