The Lotte Marines' 20-year-old pitcher Roki Sasaki said he enjoyed basking in the afterglow of his perfect game — Nippon Professional Baseball's first in 28 years — but woke up ready for a fresh start on Monday.

"The reality is slowly starting to sink in. I spent last night immersing myself in the experience," Sasaki said of his heroics on Sunday.

"That mark in history will always stand. A player is expected to perform throughout the season so I'm shifting gears and moving on," he said after an hourlong training session which included core exercises and sprints.