Cleveland Guardians pitcher Luis Ortiz was placed on non-disciplinary paid leave just hours before he was expected to take the mound against the Chicago Cubs on Thursday, MLB announced.The nature of the leagues investigation was not immediately known.Ortiz, in his first season with the Guardians, will remain on paid leave through the end of the All-Star break due to anMLB investigation, the league said, adding that it will not comment further until their probe is complete.CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWSThe Guardians also released a statement following MLBs announcement."The Guardians have been notified by Major League Baseball that Luis Ortiz has been placed on leave per an agreement with the Players Association due to an ongoing league investigation."The Guardians are not permitted to comment further at this time, and will respect the league's confidential investigative process."DIAMONDBACKS BAN LOYAL SEASON-TICKET HOLDER AFTER REPEATED INTERFERENCE INCIDENTSThe 26-year-old right-handed pitcher was acquired by Cleveland in a trade with thePittsburgh Pirates that also included Michael Kennedy and Josh Hartle in exchange for Spencer Horwitz.In 16 starts with the Guardians, Ortiz is 4-9 with a 4.36 ERA and 96 strikeouts. His losses are tied for the most in the American League currently.After getting scratched from Thursdays lineup, Cleveland called up left-hander Joey Cantillo, who is 1-0 with one save and a 3.81 ERA in 21 appearances this season.The Associated Press contributed to this report.Follow Fox News Digitalssports coverage on X, and subscribe tothe Fox News Sports Huddle newsletter.