In other mixed doubles action, Canada and Russian athletes each picked up two wins on Friday against Finland and China.
The top four teams in the standings at the end of the round-robin games advance to the semifinals on Monday.
"It's a let down to lose a game like when we felt like we had them, but oh well".
"Obviously wanted to start off with a win, but it's a long week thankfully", said Lawes, a 29-year-old from Winnipeg.
On a chilly night in PyeongChang, the ceremony lasted approximately two hours and 17 minutes, one of the shortest in recent memory. "There are things that are out of your control so you can't really sweat those things". "On to the next", Matt Hamilton said following the game.
Morris and Lawes have won five straight after opening competition with a loss to Norway.
Then on Friday, they started looking like a true gold medal contender.
Erin Hamlin will be the flag bearer for the USA on Friday morning in the Parade of Nations.
"For the most part, we played a pretty good game", Matt Hamilton said.
Kristin Skaslien and Magnus Nedregotten, engaged to be married, downed the top-ranked Canadians 9-6 on day one of the mixed doubles tournament here. "I thought it was lame, to be honest".
The 39-year-old from Ottawa and teammate Kaitlyn Lawes fell 9-6 to Norway's Kristin Skaslien and Magnus Nedregotten in Thursday's opening draw thanks to some uncharacteristic mistakes at critical times.
The two teams that would play in the potential tiebreak game will depend on Switzerland's game against Team OAR Saturday night. "We had a really good team practice yesterday and got the rocks dialed in. Since we've done that our performance has improved immensely".
"It was quiet", Skaslien said, "but I heard our commentator, our Norwegian commentator up in the stands say: 'Oh what a shot!'" "But I've kind of coached Becca going up and we've played a lot together and I've always kind of done it so I know that anything like that is going to be strictly positive and trying to help us, not hurt us". "Unfortunately, we came out on the wrong end of the stick there", Becca Hamilton said to reporters following the game.
Canada jumped out to a 3-0 lead in the first end and didn't look back, requiring only six ends to defeat the Russian team.