Yamamoto joined the WWE in late 2007 and debuted for WWE's developmental territory, Florida Championship Wrestling (FCW), where he was to undergo assessment and training in the "WWE Style" of wrestling which is different from the Japanese style. He first wrestled under the name, Mr. Yamamoto and then simply as Yamamoto. He also briefly teamed with Sheamus O'Shaunessy where they formed a tag team under the name, "The Movers and the Shakers". He later changed his ring name to Yoshitatsu and tweaked the spelling of it to Yoshi Tatsu, which is the name he currently wrestles under.