2025 MLB Topps Now ROKI SASAKI Rookie Card #3 Dodgers Debut in Tokyo - Graded GEM-MINT 10. Roki Sasaki, the Japanese pitching sensation, joins the Dodgers team in an international free agency signing with Major League Baseball. The Dodgers are well equipped to help Sasaki become one of the best starting pitchers in MLB, as they have a knack for bringing out the best in Major League-caliber arms. The 23-year finally made his MLB debut by showing off his arm at the Tokyo Dome. The Japanese hurler fired three straight 100-mph pitches to begin his first career big-league start.