Sorry Farm Fan I have to go against you on this one. The defense is something I usually focus on in games and as your opposition has mentioned there is more to it than meets the eye. Collier is without a doubt the weakest link on the USA team period. Every player is going to have off games with respect to shooting, but they can always play defense. We should also never make an evaluation based on one game. It usually comes down to a trade-off between what a player can contribute in respect to both offense and defense.
In watching many 3x3 USA games at multiple events I have come to the conclusion that Collier was a bad choice period. She just is not suited for 3x3. Post players are generally going to have certain weaknesses against certain players on defense while having advantages against those same players on offense. The problem with Collier is that in 3x3 her offensive advantage is not as great as one would expect from a player of her height.
The only game where she really dominated in the post was against Mongolia. Their team was comprised of 4 very short and not very skilled player who could not take advantage of the taller and immobile Collier. Against most other teams, for some reason, Collier never is able to take advantage of her size advantage as one would expect from a big post player. Contrarily, her immobility is taken advantage of by the other teams constantly.
As I mentioned before, in 3x3 the players are constantly changing and a team has to take advantage of matchups as they present themselves. The fact that shots outside the arch have twice the value gives the advantage to perimeter players. What this means that post players need to really excel in the areas that their size and heights should give them. The not only need to keep their own match-up from scoring in the lane, but also provide help defense when the opposition get by their teammates. In 3x3, with all that space that happens often. That requires lateral quickness, which Collier seems to lack in respect to the speed of this type of game. As the defenders of Goodman have pointed out, help defense is very important in this type of game.
As DaBball pointed out- Alarie is the best post player on the USA roster. Unless the post is totally dominate unstoppable back to the basket scoring machine inside, you want a quick and moble post to be able to match up with the generally smaller opposition and especially to provide help defense. It would actually be better to have a very mobile player who is quick enough to provide heath defense and just tall enough to defend the few bigger posts that you find in 3x3. You really need more defensively from them than offense.
Stats can often be deceptive. Against teams like Mongolia, players can pad their stats to give an unrealistic perspective of their actual play throughout the series. Granted Sabrina didn't have a good series against Italy, but that will often happen. We do have to put those games in perspective, by comparing that shortcoming against other games. And I don't mean games against teams like Mongolia that anyone could pad their stats against.
As I stated long ago, I feel Coller was the worst choice for the team. Let's get it straight, I am not criticizing her as a 5x5 player, just as a 3x3 player. I just feel that the USA has not had enough experience in 3x3 to fully understand what skills will stand out and which will not. People involved in coaching are generally not the sharpest tools in the shed with respect to change and innovation. They generally are very methodical and not adept at thinking outside the box. It will probably take a few years before they will figure out the best skill sets and combination of players for this game.