Sam Mewis (3) celebrates her goal with sister Kristie Mewis (6). (David Butler II-USA)

Overcoming a determined Mexico side and a driving rain, the U.S. women’s national team continued their preparation for the Tokyo Olympics by registering a 4-0 victory in the first game of its Send-Off Series at Pratt & Whitney Field at Rentschler Stadium in East Hartford, Conn. Thursday night.

The victory, in front of 21,637 rain-drenched fans, extended the USA’s unbeaten streak to 43 games, which tied the longest in team history as head coach Vlatko Andonovski remained unbeaten in 22 games (21-0-1) since taking over the squad in 2019.

Christen Press scored twice and Sam Mewis once, although the highlight goal of the night came from second-half substitute Tobin Heath in the 74th minute. Only 52 seconds after replacing Megan Rapinoe, Heath drilled a 30-yard shot from the left side with her first touch of the game to give the Americans a three-goal advantage. Heath hadn’t played since December due to an injury.

Alyssa Naeher, who played in the first half, and Adrianna Franch, who came on at halftime, shared the clean sheet.

The Mewis sisters combined for the first sister to sister goal in USWNT history the 21st minute. Older sibling Kristie sent a short pass to Sam, who booted in a 17-yard shot from the right side of the box into the near post for her 23rd international goal. They celebrated the score by doing a chest bump.

After Alex Morgan hit the left post after a Rapinoe feed in the 31st minute, the Americans doubled their lead in the 41st minute. This time, it was a nifty passing sequence from Lindsey Horan in the middle of the field to Sam Mewis toward the left side. Mewis fed Rapinoe on the left flank and as the forward set up Press, who slotted the ball past goalkeeper Emily Alvarado.

In contrast to the teams during the recent WNT Summer Series, the Mexicans refused to bunker in as the game was more much wide open than many observers had thought it would be.

In fact, the visitors almost equalized in the 35th minute. Maria Sanchez latched onto a long ball and had an excellent opportunity to score when right back Kelley O’Hara slipped on the wet grass. Center back Abby Dahlkemper, however, managed to block her attempt.

Rockville Centre, N.Y. native Crystal Dunn had an active second half overlapping as a left back. She penetrated deep on the flank in the 65th minute, Alvarado snared her hard cross.

Press tallied her 63rd international goal in the 85th minute. Second-half sub Tierna Davidson sent a left=wing cross into the area that Press slipped past Alvarado from close range to close out the scoring.

Press has been involved in 35 go games she has played for the USWNT.

These two teams will tussle again at the same venue in the second and final game of the Send-Off Series Monday at 5 p.m. ET.