The most recent example of that is Myles Turner from Euless (Tex.) Trinity.
Turner wasn't a complete unknown coming into the spring. He had been at least on the mid-major radar for a little while and some high-major schools were sniffing around his recruitment (including UCLA assistant David Grace). So in that way things are a bit different than the two all-time blow ups, Tracy McGrady and Anthony Davis, but still Turner's explosion has been impressive.
Playing with Texas Select on the Under Armour circuit, Turner began turning heads at the Real Deal on the Rock. There he made a statement as a guy at 6-foot-11 who could change the game blocking shots and he showed skill on the offensive end.
Things then continued at the Jayhawk Invitational where Turner was completely dominant. Turner led his team to the tournament title, dominating the Illinois Wolves in the finals. Turner did it by completely taking away the rim on the defensive end, and then scoring all the way out to three point range on offense with his skill level and developing ability to score around the rim.
Seemingly Turner got better every single time out on the floor, and that just kept happening. At the Under Armour Invitational over Memorial Day weekend Turner was the elite performer there, cementing himself as a five-star prospect; now the only question would be how high would he go within the five-star ranks.
It was a question that was about to be answered, and answered emphatically by Turner.
At the NBPA Top 100 Camp, Turner had a chance to prove himself against some of the top bigs in the country. While the nation's No. 1 overall prospect Jahlil Okafor and fellow Chicago product Cliff Alexander didn't go to Charlottesville for the event, most of the other top prospects did.
From game one on day one it was clear that Turner was the class of the bigs who were in attendance. Turner was absolutely dominant. He blocked shots, rebounded, ran the floor, showed good hands, hit outside jumpers, and scored some with his back to the basket.
It was truly impressive. For a kid who had never been in that kind of all-star atmosphere before, Turner was totally dominant. He showed not only that he was a five-star, but that he was a sure-fire top-10 prospect.
At the end of the day Turner made his way from unranked to No. 5 overall and the No. 2 center prospect in the nation.
While not unprecedented, it is still nearly unfathomable. Turner went from mid-major interest to offers from nearly all of the nation's elite. Now, headed into July, he will have every high-level head coach tracking his every move.
It is tough to keep secrets this day and age, and for a while one was being kept in the heart of the Dallas-Fort Worth Metroplex, but that secret has now been exposed and Turner is a household name.