Please note that the pairing listed below from the U.S. Open Cup site are speculative. The pairings and sites have not yet been set (see post below).
The Sounders' third-round opponent and site will be determined soon after the second round is completed.
Sorry for any misunderstanding.
If the Portland Timbers beat the Sonoma County Sol on Tuesday, they would host Seattle Sounders FC at 7 p.m. June 30 at PGE Park.
If Sonoma beats Portland, the Sounders would host the Sol at 7 p.m. June 30 at Starfire.
Here are the possible pairing from the U.S. Open Cup website.