Yomiuri Giants ace Tomoyuki Sugano said Sunday he turned down offers from major league clubs because none of them were 100% convincing but added that returning for another season in Japan didn't leave him without regret.

Speaking to reporters online, the 31-year-old Sugano expressed some frustration with the conditions under which he was forced to negotiate.

"There were a lot of discussions, but none were able to convince me 100%," he said. "I can't say I have no regrets about not going. I have a fire inside me and the best thing is to move forward with high expectations for myself."