Michael Lorenzen pitched six strong innings and the host Detroit Tigers defeated the slumping Pittsburgh Pirates 4-0 on Tuesday night.Lorenzen (2-2) struck out a season-high seven batters while allowing five hits and two walks. Will Vest pitched two scoreless innings with three strikeouts. Jose Cisnero got the last three outs to finish off the shutout.Riley Greene had three hits and scored a run, while Spencer Torkelson supplied two doubles, a run and an RBI for Detroit.Pirates starter Luis Ortiz (0-2) allowed four runs (three earned) and seven hits in three-plus innings. He also walked four batters and threw a wild pitch. Pittsburgh has lost 12 of its last 14 games while scoring just 22 runs during that stretch.The Tigers scored twice in the first inning and Ortiz was lucky it wasn’t more.Greene started it off with a one-out double and scored on Javier Baez’s opposite-field single. Torkelson then drilled a slider into the left-center field gap for a double, driving in Baez.Ortiz walked the next two batters but recovered to strike out Miguel Cabrera. Andy Ibanez then hit a long fly ball that Jack Suwinski caught on the warning track.