Kubo was drafted in the "free frame" by Lotte in the 2004 draft from Matsushita Electric of the corporate leagues (who he had joined after graduating from Kansaidai Number One High School). He won his first seven decisions that year and ended up going 10-3 for the eventual Nippon Series champions. He didn't get into the Series though (the Marines swept the Tigers in four games so I'm guessing he would have started Game Five if it had gone that far) but he did win the Pacific League MVP award. He was Lotte's Opening Day starter in 2006 but had a poor season, going 7-13. He missed some time the following year due to a broken finger and his numbers suffered.
Following the 2008 season Lotte traded him to the Hanshin Tigers for Kentaro Hashimoto. He went 14-5 in 2010, leading the Central League in Winning Percentage and making the All Star team for the only time in his career. After being a starter for most of his career the Tigers moved him into a relief role after Kyuji Fujikawa went to the US in 2013. He left the Tigers for the Baystars as a free agent after that year and he went back to starting role, going 12-6 in 2014. His playing time decreased over the next three years - last year he only started seven games with the ichi-gun Baystars, going 4-2 with an ERA of 5.35. The Baystars released him in early October.
His BBM rookie cards are #20 from the 2005 Rookie Edition set and #159 from the 2005 1st Version set. He's had cards in every 1st Version set from 2005 until 2016. His first Calbee card was in the Title Holders subset (#T-03) from the 2006 set. His first "regular" Calbee card was not until 2009 (card #171). Check out his card list at TradingCardDB.com for a more comprehensive list.
Here's a bunch of his cards:
|2005 BBM Rookie Edition #20|
|2005 BBM 1st Version #159|
|2006 BBM 1st Version #435|
|2008 BBM Lotte 40th Anniversary #84|
|2009 BBM 2nd Version #781|
|2010 BBM All Stars #A14|
|2014 Calbee #159|
|2017 BBM Baystars #DB15|