"And I think that to be respectful to opponents is to play hard against opponents, and as Alex said, it's a tournament where goal differential is important", Ellis said.
"When you get a deluge of goals like that, it's a good feeling", Ellis said.
Morgan rightfully claimed headlines by scoring a record five goals and adding three assists.
The Americans out-shot Thailand 40-2 and had 73 percent of the possession.
Former U.S. national soccer player Heather O'Reilly says the American women are ready to make their mark on this year's World Cup tournament and hopefully bring home back-to-back trophies.
"We really just came into this game and really wanted to showcase ourselves and what we've been preparing for and what we've been working on", Morgan said after the match. We got a lot of attacks and I think we were really clinical in the number of attacks that we did get.
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The Germans ended up winning it all, though they ran out of goals in their next game against England, settling for a 0-0 tie.
Morgan opened the goal spree for the title favorites, who are in pursuit of a fourth world crown, with a header in the 12th minute and from then on there was no stopping the champions.
Morgan scored her third and fourth as the match approached full-time, and Megan Rapinoe added another on the counter-attack in between to put the USA up 10-0. The team is 7-1-2 overall this year, with six straight wins going into the World Cup and its seven different scorers against Thailand set a record for most in a Women's World Cup game. No World Cup team, men or women, had ever scored 13 goals before. The victory gives the US three points in Group F and the goal differential advantage over Sweden.
Thailand, ranked No. 34 in the world, was clearly outmatched even though the team has shown progress on the world stage. Now, Morgan has eight career World Cup goals.
The first Women's World Cup kicked off with a blowout.
At the final whistle, Lloyd and Christian Press were seen consoling the Thailand goalkeeper. "We don't have any excuse and accept they are better", said Thailand coach Nuengrutai Srathongvian.