Porcello (0-2) faced 11 batters, threw 47 pitches and got only two outson a double-play grounder by Chris Iannetta.
In other AL action, it was:
‧ Twins 2, White Sox 1, 10 inns
‧ Rays 1, Athletics 0
‧ Indians 19, Astros 6
‧ Rangers 5, Mariners 0
In New York, Bryce Harper launched two long home runs, including a tiebreaking drive in the eighth inning, and also doubled on Saturday to lead the Washington Nationals over the New York Mets 7-6.
Adam LaRoche and Ian Desmond homered for the Nationals on Bark in the Park day at Citi Field. Fans paid US$35 for tickets in the second deck in right field, and brought their dogs for US$10.
After the game, Nationals manager Davey Johnson said third baseman Ryan Zimmerman was being placed on the 15-day disabled list because of persistent tightness in his left hamstring.
Harper hit a two-run homer to right-center in the third. He then hit the first pitch from Josh Edgin (0-1) in the eighth even farther and harder to right-center for his seventh home run.
Tyler Clippard (1-0) got four outs for the win and Rafael Soriano closed for his sixth save.
GIANTS 2, PADRES 0
In San Francisco, Pablo Sandoval hit a two-run homer and Tim Lincecum struck out a season-best eight batters. Lincecum (2-0) pitched 6-2/3 scoreless innings, providing a steady presence on the mound after he had allowed four or more runs in a single inning in two of his previous three starts this year.
In other NL action, it was:
‧ Rockies 4, Diamondbacks 3
‧ Reds 3, Marlins 2, 13 inns
‧ Cardinals 5, Phillies 0
‧ Pirates 3, Braves 1
‧ Brewers 5, Cubs 1