This 2018 Japan All-Stars Single Signed Baseball has been signed by Juan Soto. Soto is a 20 year old Dominican professional baseball outfielder for the Washington Nationals. Soto made his major-league debut on May 20, 2018, becoming the youngest player in the major leagues at 19 years 207 days, and the first player born in 1998 to appear in a major-league game. He came on as a pinch-hitter in the eighth inning of a game against the Los Angeles Dodgers at Nationals Park in Washington, D.C.. This kid has a huge future ahead of him. In his debut year, 2018, he batted .292, hit 22 Home Runs and had 70 RBI's. Incredible for a 20 year old!