Seiya Suzuki made a convincing return from the injured list Saturday, going 2-for-5 with an RBI and run scored for the Chicago Cubs in a 10-9 loss to the Pittsburgh Pirates. The Japanese outfielder, who also recorded his first stolen base of the season, said he had yet to find his groove but was not bothered by the right oblique strain that saw him placed on the 10-day IL on April 15. “My batting wasn’t good, but I just happened to get hits,” said the 29-year-old, who was batting .305 with three homers and 13 RBIs in 15 games before the injury. Top pitching prospect Paul Skenes struck out Suzu…