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The Sounders (12-7-8) rebounded from a 1-0 loss to Minnesota last week, Seattle’s only loss June 1.
Raleigh’s record-breaking home run also marked his ninth multi-home run game of the season.
The Mariners return home to start a weekend series with the Athletics on Friday.
Mariners RHP Luis Castillo (8-6, 3.48 ERA) starts Wednesday against Phillies LHP Jesus Luzardo (11-6, 4.21).
Mariners RHP Bryce Miller (2-5, 5.73 ERA) starts Tuesday against Phillies LHP Cristopher Sanchez (11-4, 2.45).
The Mariners head to Philadelphia on Monday for the start of a three-game series.
Logan Evans (6-4, 4.36 ERA) starts for Seattle on Thursday.
The Bells will face the Portland Pickles who reached the championship game with a comeback win over Corvallis
Seattle sends RHP Logan Gilbert (3-4) to the mound Wednesday night against LHP Trevor Rogers (5-2) of the Orioles.
No. 3 Ohio State and No. 7 Oregon are poised to return to the playoff if their new quarterbacks keep the offenses on the rails.