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Day 1 15U Standouts from Centennial State Cup 

Day 1 15U Standouts from Centennial State Cup 
Duvalier Johnson
Duvalier Johnson May 2, 2026 @ 09:56 AM
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In this article:

John Whiteside
John Whiteside 5'11" | PG/SG | 2029
CO
Mason Brown
Mason Brown 6'6" | SF | 2029
CO
Noah Mahlberg
Noah Mahlberg 6'2" | CG/SG | 2029
CO
Dash Spann
Dash Spann 6'3" | CG | 2029
CO
Grayson Rooney
Grayson Rooney 6'2" | PG | 2029
CO
<!-- wp:paragraph --> <p>Day 1 at the Centennial State Cup had some good runs, but the 15U group is where I spent most of my time, and it paid off. There was a lot to like across different games, especially from guys who just kept making plays without forcing it. These are the names that stood out and had me paying attention throughout the day.</p> <!-- /wp:paragraph --> <!-- wp:acf/evaluation-block {"name":"acf/evaluation-block","data":{"player_evaluations_0_player":["2893619"],"_player_evaluations_0_player":"field_62ab9d62ecf2c","player_evaluations_0_override_profile_image":"","_player_evaluations_0_override_profile_image":"override-player-profile-image","player_evaluations_0_not_in_database":"","_player_evaluations_0_not_in_database":"field_62aba48cecf2d","player_evaluations":1,"_player_evaluations":"field_62aba7547dc44"},"mode":"preview","alignText":"left","anchor":"acf-block-69f6108371810"} --> <!-- wp:paragraph {"placeholder":"Add evaluation here...","className":"text-gray-700"} --> <p class="text-gray-700">Mahlberg was a player who I wanted to see more of, as I had some questions heading into the event, and he answered plenty of them in game 1. He shoots it with confidence, and his team put him in creative spots to let it fly. He was coming off of screens ready to shoot, he let it fly when he had open looks, and that range opened up the rest of his game. He also had a couple of power finishes and looked very comfortable with the ball in his hands. He makes quick decisions and gets to his spots. Eye-opening day 1. <br></p> <!-- /wp:paragraph --> <!-- /wp:acf/evaluation-block --> <!-- wp:acf/evaluation-block {"name":"acf/evaluation-block","data":{"player_evaluations_0_player":["2822673"],"_player_evaluations_0_player":"field_62ab9d62ecf2c","player_evaluations_0_override_profile_image":"","_player_evaluations_0_override_profile_image":"override-player-profile-image","player_evaluations_0_not_in_database":"","_player_evaluations_0_not_in_database":"field_62aba48cecf2d","player_evaluations":1,"_player_evaluations":"field_62aba7547dc44"},"mode":"preview","alignText":"left","anchor":"acf-block-69f610837187b"} --> <!-- wp:paragraph {"placeholder":"Add evaluation here...","className":"text-gray-700"} --> <p class="text-gray-700">Rooney was on a mission to impact the game on both ends, and that stood out early in the game on Day 1. He pushed the pace and forced the Titans to play at a pace that they're not accustomed to. He speeds you up as he picked up full court, played the passing lanes, and turned plenty of that into scoring in transition. He finished with both hands at the rim, he wore down the defense and did not force the issue. Rooney is under control and is a player to keep an eye on throughout the weekend. </p> <!-- /wp:paragraph --> <!-- /wp:acf/evaluation-block --> <!-- wp:acf/evaluation-block {"name":"acf/evaluation-block","data":{"player_evaluations_0_player":["2887937"],"_player_evaluations_0_player":"field_62ab9d62ecf2c","player_evaluations_0_override_profile_image":"","_player_evaluations_0_override_profile_image":"override-player-profile-image","player_evaluations_0_not_in_database":"","_player_evaluations_0_not_in_database":"field_62aba48cecf2d","player_evaluations":1,"_player_evaluations":"field_62aba7547dc44"},"mode":"preview","alignText":"left","anchor":"acf-block-69f61083718ca"} --> <!-- wp:paragraph {"placeholder":"Add evaluation here...","className":"text-gray-700"} --> <p class="text-gray-700">Dash is a player who we've seen in the underclassman glue guy role during the high school season, so it was great to see him with the ball in his hands more and able to make plays. He showed flashes as he filled it up in various ways. What stands out first is his frame. His strength shines through as guards have a difficult time defending him, and we saw a few and-1 finishes in the game. He had a few big guards spin move finishes and then opened it up with a 3-pointer as well to showcase his versatility. He had a stretch of dominance, and the lead ballooned with him in the game. He's physical, has a great feel, and is instinctive on both ends of the floor, and was a Day 1 standout. <br></p> <!-- /wp:paragraph --> <!-- /wp:acf/evaluation-block --> <!-- wp:acf/evaluation-block {"name":"acf/evaluation-block","data":{"player_evaluations_0_player":["3026099"],"_player_evaluations_0_player":"field_62ab9d62ecf2c","player_evaluations_0_override_profile_image":"","_player_evaluations_0_override_profile_image":"override-player-profile-image","player_evaluations_0_not_in_database":"","_player_evaluations_0_not_in_database":"field_62aba48cecf2d","player_evaluations":1,"_player_evaluations":"field_62aba7547dc44"},"mode":"preview","alignText":"left","anchor":"acf-block-69f6108371914"} --> <!-- wp:paragraph {"placeholder":"Add evaluation here...","className":"text-gray-700"} --> <p class="text-gray-700">Brown is a player who pops for me due to his size, but when sitting and watching him. There's plenty of upside that comes with him. He's doing a ton of little things, and that adds up. He was grabbing boards and finishing around the basket for Colorado Mayhem, and he got more comfortable throughout the game. What I love is that you do not see a ton of often is a big man who boxes out on almost every single play. Brown was putting a body on someone, which eliminated rebounding opportunities for Rev Up. He's really protecting the paint and got blocks at the rim, runs the floor, and is an interchangeable defender that plugs holes in the defense. On offense, he was flashing to the middle when they went zone, kept the ball high, and finished over the top or through contact. He had some finishes on the block and used his size as he was the biggest player in the game. When it all comes together, he's going to be a solid player as he's raw and talented and will only get better. Solid Day 1. </p> <!-- /wp:paragraph --> <!-- /wp:acf/evaluation-block --> <!-- wp:acf/evaluation-block {"name":"acf/evaluation-block","data":{"player_evaluations_0_player":["3275433"],"_player_evaluations_0_player":"field_62ab9d62ecf2c","player_evaluations_0_override_profile_image":"","_player_evaluations_0_override_profile_image":"override-player-profile-image","player_evaluations_0_not_in_database":"","_player_evaluations_0_not_in_database":"field_62aba48cecf2d","player_evaluations":1,"_player_evaluations":"field_62aba7547dc44"},"mode":"preview","alignText":"left","anchor":"acf-block-69f610837195d"} --> <!-- wp:paragraph {"placeholder":"Add evaluation here...","className":"text-gray-700"} --> <p class="text-gray-700">Whiteside is one of the few players at this age who plays a ton of varsity, and he's not only playing a ton, but he's the leading scorer for his team, so it is intriguing to watch him play at this level and adapt to having other talented players around him. You can tell he has varsity feel with how he pushes the pace, attacks to get to his go-to spots, and handles the pressure that teams throw at him, and now it is about providing balance as a lead guard who can make plays for teammates but also get his own with the flow of the offense. On Day 1, he was under control by taking care of the ball as he took on ball handling duties when he was in, but it was certainly a day of him being all over on defense and playing with pace. Want to see how the rest of the weekend goes for him. </p> <!-- /wp:paragraph --> <!-- /wp:acf/evaluation-block -->

Day 1 at the Centennial State Cup had some good runs, but the 15U group is where I spent most of my time, and it paid off. There was a lot to like across different games, especially from guys who just kept making plays without forcing it. These are the names that stood out and had me paying attention throughout the day.

Noah Mahlberg

Noah Mahlberg

CO
CG/SG
HEIGHT 6'2"
POS CG/SG
CLASS 2029
View Player

Noah Mahlberg

Instagram Twitter
State: Colorado
School: Valor Christian
Club: Utah Mountain Stars

This evaluation is available to subscribers.

Mahlberg was a player who I wanted to see more of, as I had some questions heading into the event, and he answered plenty of them in game 1. He shoots it with confidence, and his team put him in…

Subscribe to read

Is this you, Noah? Unlock your evaluation to everyone by subscribing →

Highlights

Grayson Rooney

Grayson Rooney

CO #9
PG #4
HEIGHT 6'2"
POS PG
CLASS 2029
View Player
​
Grayson
Rooney PG
Class
2029
Height
6'2"
HS
Mountain Vista
|
CO
Day 1 15U Standouts from Centennial State Cup
Rooney was on a mission to impact the game on both ends, and that stood out early in...
Written by Duvalier Johnson
Read more at PrepHoops​.com
Prep Hoops

Grayson Rooney

Instagram
State: Colorado
School: Mountain Vista
Club: Utah Mountain Stars

Rooney was on a mission to impact the game on both ends, and that stood out early in the game on Day 1. He pushed the pace and forced the Titans to play at a pace that they're not accustomed to. He speeds you up as he picked up full court, played the passing lanes, and turned plenty of that into scoring in transition. He finished with both hands at the rim, he wore down the defense and did not force the issue. Rooney is under control and is a player to keep an eye on throughout the weekend.

Evaluations are normally subscriber-only but when an athlete subscribes, theirs becomes free for all readers. Subscribing doesn't change who the Scout covers, it changes who gets to see it.

Highlights

Dash Spann

Dash Spann

CO #6
CG #1
HEIGHT 6'3"
POS CG
CLASS 2029
View Player
​
Dash
Spann CG
Class
2029
Height
6'3"
HS
Thunderridge
|
CO
Day 1 15U Standouts from Centennial State Cup
Dash is a player who we’ve seen in the underclassman glue guy role during the high school season,...
Written by Duvalier Johnson
Read more at PrepHoops​.com
Prep Hoops

Dash Spann

Instagram Twitter
State: Colorado
School: Thunderridge
Club: Utah Mountain Stars

Dash is a player who we've seen in the underclassman glue guy role during the high school season, so it was great to see him with the ball in his hands more and able to make plays. He showed flashes as he filled it up in various ways. What stands out first is his frame. His strength shines through as guards have a difficult time defending him, and we saw a few and-1 finishes in the game. He had a few big guards spin move finishes and then opened it up with a 3-pointer as well to showcase his versatility. He had a stretch of dominance, and the lead ballooned with him in the game. He's physical, has a great feel, and is instinctive on both ends of the floor, and was a Day 1 standout.

Evaluations are normally subscriber-only but when an athlete subscribes, theirs becomes free for all readers. Subscribing doesn't change who the Scout covers, it changes who gets to see it.

Highlights

Mason Brown

Mason Brown

CO #139
SF #21
HEIGHT 6'6"
POS SF
CLASS 2029
View Player
​
Mason
Brown SF
Class
2029
Height
6'6"
HS
Broomfield
|
CO
Day 1 15U Standouts from Centennial State Cup
Brown is a player who pops for me due to his size, but when sitting and watching him....
Written by Duvalier Johnson
Read more at PrepHoops​.com
Prep Hoops

Mason Brown

Instagram
State: Colorado
School: Broomfield
Club: Colorado Mayhem

Brown is a player who pops for me due to his size, but when sitting and watching him. There's plenty of upside that comes with him. He's doing a ton of little things, and that adds up. He was grabbing boards and finishing around the basket for Colorado Mayhem, and he got more comfortable throughout the game. What I love is that you do not see a ton of often is a big man who boxes out on almost every single play. Brown was putting a body on someone, which eliminated rebounding opportunities for Rev Up. He's really protecting the paint and got blocks at the rim, runs the floor, and is an interchangeable defender that plugs holes in the defense. On offense, he was flashing to the middle when they went zone, kept the ball high, and finished over the top or through contact. He had some finishes on the block and used his size as he was the biggest player in the game. When it all comes together, he's going to be a solid player as he's raw and talented and will only get better. Solid Day 1.

Evaluations are normally subscriber-only but when an athlete subscribes, theirs becomes free for all readers. Subscribing doesn't change who the Scout covers, it changes who gets to see it.

Highlights

John Whiteside

John Whiteside

CO
PG/SG
HEIGHT 5'11"
POS PG/SG
CLASS 2029
View Player

John Whiteside

State: Colorado
School: Montbello
Club: Tru Colorado National 2029

This evaluation is available to subscribers.

Whiteside is one of the few players at this age who plays a ton of varsity, and he's not only playing a ton, but he's the leading scorer for his team, so it is intriguing to watch him play at…

Subscribe to read

Is this you, John? Unlock your evaluation to everyone by subscribing →

Highlights

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