TUKWILA, Wash. (CBS Seattle/AP) — Sammy Ochoa scored two goals just four minutes apart midway through the second half as the Seattle Sounders opened pursuit of an unprecedented fourth straight U.S. Open Cup on Wednesday night by routing the Atlanta Silverbacks, 5-1.

Andy Rose, Osvaldo Alonso and Alex Caskey also scored for the Sounders, who set a franchise record for goals in an Open Cup game. The old record was four against Real Salt Lake in 2009.

“Coach (Sigi Schmid) told us this was an opportunity for us to play, and I take whatever — five minutes, 10 minutes — I take every opportunity,” said Ochoa, who has seen action in just three of Seattle’s 13 MLS games, totaling a mere 53 minutes.

Seattle’s victory against the second-tier NASL Silverbacks came one night after seven MLS teams lost to lower-division sides in other third-round U.S. Open Cup games. The Sounders were the eighth MLS team to secure a berth in the fourth round (round of 16), with their next game set for Tuesday.

Seattle remained undefeated in U.S. Open Cup play (14-0-1) since joining MLS in 2009. The only blemish on its record was a 1-1 third-round tie at Portland in 2010. The Sounders eventually won that game on penalty kicks, 4-3.

The victory snapped Seattle out of a recent slump. Despite a strong 7-1-1 start, the Sounders are winless in their last four league games (0-2-2).