Coming: Akinori Iwamura, Kazuo Matsui, Shinjya Okamoto, Kelvin Jimenez, Byung-Hyun Kim, manager Senichi Hoshino
Going: Kazuo Fukumori, Norihiro Nakamura, Makoto Kosaka, Ryuji Miyade, Todd Linden, Andy Phillips, Naoto Watanabe, Keiichi Yabu, manager Marty Brown
Staying: Hisashi Iwakuma, Darrell Rasner, Randy Ruiz, Juan Morillo
Summary: Rakuten's 2011 offseason was headlined by two big events: the unsuccessful posting of ace Hisashi Iwakuma, and the hiring of accomplished manager Senichi Hoshino. Hoshino inherits a team that finished sixth last year, and is facing with losing its ace again.
I shared a few observations about the Iwakuma posting, and why in retrospect it was destined to fail, over at FanGraphs last month, so I won't rehash that. From an on-the-field perspective, the Eagles are certainly more competitive with him than without him. He and heir apparent Masahiro Tanaka will lead a rotation that goes four deep; five if Kelvin Jimenez's KBO success translates to Japan. Coincidentally, Rakuten's two notable bullpen acquisitions came via Korea last year: Shinya Okamoto spent last season with the LG Twins, and the other is Byung-Hyun Kim. Those two along with the returning Juan Morillo give Hoshino a couple more relief options, which will help as Rakuten's bullpen wasn't particularly strong in 2010. But overall pitching was not really Rakuten's problem last season. The Eagles allowed 635 runs and a 3.98 ERA, which was right in line with the all the Pacific League teams that don't have Yu Darvish.
Rakuten's problem in 2010 was an anemic offense. Only Nippon Ham hit fewer home runs than Rakuten's 95, but the Fighters' contact-hitting lineup still scored 36 more runs than the Eagles. Rakuten finished last or next to last in the Pacific League in runs scored, batting average, on-base percentage, slugging percentage, steals, and intentional walks. This poor performance can mostly be attributed to four players: imports Todd Linden and Andy Phillips didn't show up last year, and veteran sluggers Norihiro Nakamura and Takeshi Yamasaki experienced declines. Linden, Phillips and Nakamura are all gone this year, replaced in the lineup by a full season of Randy Ruiz and NPB returnees Akinori Iwamura and Kazuo Matsui. That group should outperform the guys who left, though Kazuo is a bit of a question mark for me. Yamasaki is getting old, but his 28 home runs and .749 OPS in 2010 were a respectable contribution. After that, the Eagles have perhaps Japan's unheralded offensive star, Teppei, who despite his talent only gets a passing mention in this article. So the offense should be better, but even in the best case scenario it's hard to see it being more than middle of the road in the Pacific League.
The last factor to discuss is the addition of Hoshino as manager. I see a few parallels with the last team he took over, the 2002 Hanshin Tigers. Hoshino is again inheriting a team coming off a last-place finish, succeeding Katsuya Nomura (though Nomura passed the Rakuten baton to Marty Brown for a season), with some some added veteran talent*. Hoshino got his Tigers off to a fast start in 2002, and though the team cooled off and eventually finished fourth, the improvement was real. The Tigers won the Central League handily in 2003 and have basically been competitive ever since. Hoshino will have less to work with in Sendai, but I wouldn't be surprised to see his tenure with Rakuten take a similar path. He'll be eager to exorcise any remaining demons from his stint managing Japan's 2008 Olympic entry, a performance so disappointing it inspired a fan to set up a site protesting his involvement in the 2009 WBC. Rakuten definitely has the talent to compete for wins in 2011, though they probably won't be in the mix for the Pacific League title. If they can take a step forward this season and build from there, Hoshino has a shot at wrapping up his distinguished managerial career on a high note.
*The 2002 Tigers brought in Atsushi Kataoka and George Arias. Tomoaki Kanemoto and Hideki Irabu joined in 2003.