Porcello gets another shutout, Tigers beat A's 3-0 Updated: Wednesday, July 2, 2014 | DETROIT (AP) - Rick Porcello pitched a four-hitter for his second straight shutout, leading the Detroit Tigers to a 3-0 victory over the Oakland A's on Tuesday night.Porcello (11-4) only had one career complete game before blanking the Rangers on June 26, but is now the first Tigers pitcher since Jack Morris to throw back-to-back shutouts. Morris threw three in a row in July 1986.Porcello is now 3-0 with 24 scoreless innings over his last three outings. He also became the first pitcher since Baltimore's Jeff Ballard on Aug. 21, 1989, to throw a shutout without a walk or strikeout. No Tigers pitcher had done it since Dizzy Trout in 1944.Torii Hunter had an RBI grounder in the fourth inning and J.D. Martinez hit a two-run homer in the sixth.Brad Mills (1-1) took the loss for Oakland, allowing three runs and six hits with three walks in six-plus innings.