Tanaka hurt his hamstring while scoring on a sacrifice fly on Friday.
The New York Yankees have placed pitcher Masahiro Tanaka on the 10-day disabled list with hamstring strains in both legs.
Tanaka suffered the injury while scoring on a sacrifice fly in Friday's victory over the New York Mets.
This is the second time in four years that Tanaka was hurt while running the bases. He suffered a similar strain in 2015 while attempting to beat out a ground ball at Citi Field.
When asked about the injury, Yankees manager Aaron Boone said it could be "weeks" before Tanaka returns.
Aaron Boone, asked if Masahiro Tanaka could be back before the All-Star Break: "Very possible he's back before the All-Star Break." Boone did use the word "weeks" to describe how long his starter could be out.— Coley Harvey (@ColeyHarvey) June 9, 2018
The Japanese right-hander has struggled to start the season, positing a 4.58 ERA in 13 starts. However, Tanaka is 7-2 on the season.
The move allowed the Yankees to recall infielder Ronald Torreyes from Triple-A Scranton/Wilkes-Barre.