The Pirates are giving up an obscene 13.2 runs per game during their last four games. They have another bad starter going today with Dario Agrazal and their best relief pitcher, Felipe Vazquez, is in jail rather than in the bullpen after being arrested on Tuesday. The Mariners have scored at least five runs in five of their past six games. 
Agrazal holds a 7.08 ERA during his last eight starts. 
Safe to say the Mariners should produce their share of runs. 
But what about the shell-shocked Pirates? They aren't likely to have their two best offensive players with Josh Bell and Starling Marte both injured. It shouldn't matter because the Pirates are facing rookie Justin Dunn followed by journeyman Tommy Milone. Dunn looked completely overmatched in his big league debut this past Thursday giving up two runs while walking five in just two-thirds of an inning against the Reds. Dunn threw 37 pitches of which 23 of his throws were called balls. He clearly doesn't appear ready for the major leagues. 
Dunn isn't expected to go more than three innings before Milone comes on the scene followed by other relievers. Milone has a 4.93 ERA.