Jaedyn Shaw's stock rises, Alex Morgan provides a spark and questions rise about Twila Kilgore - USWNT Winners and Losers from the Gold Cup group stage

The old saying states that if you're good enough, you're old enough. It's been made very, very clear that Shaw is good enough to contribute to this team.

Shaw, still just 19, was the star of the show against Argentina, scoring twice in the 4-0 win. That's now four goals in just even caps for the teenager, who has never shown a single sign of fear despite playing under the USWNT microscope.

Fitting Shaw in isn't easy, though. The U.S. is loaded in the attack with talent and this Gold Cup group is even missing a few players, names like Mallory Swanson, Alyssa Thompson and Catarina Macario who could surely start any given game.

Shaw, though, has proven that she's a player that deserves to be involved. She's too talented right now and her ceiling is too high in the future. Let her use these games to get that extra little bit of experience before the Olympics, when she could be poised for a real breakout.

On form, Shaw has earned that Olympic chance already. If what we've seen so far is any indication, she could be next up in the long line of USWNT stars.

Sauerbrunn will have been the first to raise her hand and acknowledge it. She's made so few during her illustrious USWNT career, which is what made Monday's even more impactful.

"I made a mistake," she said atfter the game. " It's very obvious that it was all on me. I probably should have done anything [other] than what I did.

"As a veteran, you have some rough days at the office and tonight is definitely a rough day. But luckily, you’ll have another day at the office and it’s just what you make out of it."

The 38-year-old defender is currently fighting for one last tournament, one last chance to play on the big stage. With Naomi Girma having already locked down one centerback spot, the question has become who will partner her, with there being several contenders for that job.

Sauerbrunn is one of those contenders, but Monday's performance won't have helped her case. Her lack of pace made Monday a difficult night for her and the USWNT defense. Girma, of course, is a player that can help cover some of that up and Sauebrunn's experience is invaluable. The question is if that'll be enough to keep her in it for the Olympics.

You have to remember that Sauerbrunn wasn't even originally in this squad, too, and was only called in as an injury replacement for Alana Cook. That makes it seem like she faces an uphill fight already, and Monday's performance has made that hill a bit steeper.

Another young star on the rise, Moultrie is finding her feet with the USWNT.

It's a shame we didn't see any more of her after her brace against the Dominican Republic. She was fantastic in that match, continuing her ascendance even earlier in her career than can be expected. You have to remember that Moultrie was anointed as next up at age 13. Now 18, she's living up to and exceeding the hype.

After that opening-game brace, it felt like this would be a perfect tournament to really toss Moultrie into the deep end. By resting her against Argentina, an understandable choice, she'd be ready to go against Mexico, right? Wrong, unfortunately.

The hope is that we'll see more of Moultrie because she has earned it. The young midfielder is clearly the future, and that future could be coming faster than many are ready for.

Twila Kilgore promised rotation, which makes sense. Three games close together for a group in preseason form... it makes sense to move things around.

What doesn't make sense, though, is rotating at the expense of developing young players. There's a time for everything, sure, and Monday night's loss to Mexico really did feel like a time for young players, not veterans.

Veterans are what we got, though. The two centerbacks, Sauerbrunn and Dahlkember, were a combined 78 years old. The first two players off the bench, Morgan and Lynn Williams, were both over 30. Alyssa Naeher started in goal, while Crystal Dunn started at left-back, too.

All of this for a game that, essentially, didn't mean too much. The USWNT had already booked a spot in the knockout stages, largely through the play of their young stars. Those stars need every second available to them if they want to be ready for the Olympics this year and, if the performance fo some of the veterans was any indication, they may be needed as soon as possible.

Why didn't we see more of Shaw and Moultrie? Why did Jenna Nighswonger start just one of the three games? Korbin Albert played plenty, too, and surely took her chance, but why weren't some of the other new faces given a similar opportunity?

It'll be interesting to see how Kilgore balances it all going into the knockouts. There's no more room for error or rotation or rest. Will she place her trust in some of the young guns, for better or worse, or will she hope to ride veterans to a trophy? Whichever we she goes, it'll likely have a pretty big impact on the road to France this summer.

Another player that wasn't supposed to be here. Morgan had been left out of the USWNT squad in recent months and had once again been excluded from this Gold Cup team. A Mia Fishel injury opened the door, though.

Morgan has run right through that door. Prior to last week, it felt like there was no way she'd be on the Olympic squad. Now, though, those chances have gotten somewhat better. It'll still be tough, but Morgan seems up for the challenge.

After going about a year scoreless, Morgan scored twice in the group stage. The first was a penalty against the Dominican Republic, a welcome confidence booster. The second was a looping header against Argentina, a finish that was far more difficult.

It wasn't the goals necessarily that were important, though. Even against Mexico, a match where the U.S. stunk, Morgan was one of the few players with the quality needed to make something happen. Nothing ever quite came off, but many of the USWNT's brightest moments came from Morgan, who looked the most likely to change the game.

In the end, it may not be enough to get her to France this summer. The USWNT's generational shift may just be too strong and the roster may be too loaded to bring in a veteran like Morgan. She's making that decision a bit more difficult, though, which is all she can do at this stage.

It's been the talking point for a few years now: the rest of the world has caught up. Never before have there been so many teams that can challenge the USWNT, and never before have there been so many teams with the confidence and ability to actually beat them.

Monday's match was a reminder of that. Even in a CONCACAF region that the U.S. has completely dominated for decades, there are still challengers.

The loss to Mexico marked the second time the USWNT has ever lost to their southern neighbors. It was also the USWNT's first loss to any CONCACAF team on home soil since 2000. That's a mighty long time, but it also feels that this loss was a long time coming.

"It just shows how far the game is coming and there's no easy games anymore," Kilgore said. "If we don't take care of business and we don't execute, this is to be expected. We'll step up and take ownership of that."

The fact is that the USWNT can't just show up anymore. They can't just go to a game, do their thing and win; it's not that easy anymore. There are too many teams with too many other good players to simply let that happen.

The game's won't be getting any easier this year or even in this tournament, so perhaps this loss came at the right time. A good wake-up call ahead of a knockout stage isn't a bad thing. We may be looking back at the loss in a few weeks as a key development point for a team that went on to lift a trophy at the end.

The hope is, though, that the lesson will linger. The USNWT isn't unbeatable anymore, and they, most of all, need to remember it.