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Who Tested Best at the Proving Grounds Combine?

Who Tested Best at the Proving Grounds Combine?
Victor Scott
Victor Scott June 30, 2026 @ 11:46 AM
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In this article:

Braxton Whitener
Braxton Whitener 6'0" | SG/PG | 2027
AR
Kingston Rottinghaus
Kingston Rottinghaus 6'5" | SF/SG | 2027
AR
Kye Watkins
Kye Watkins 6'5" | SF | 2029
AR
Liam Henry
Liam Henry 5'11" | CG | 2029
AR
KJ Addison
KJ Addison 6'3" | SG | 2028
AR
Cooper Davis
Cooper Davis 6'1" | CG/PG | 2028
AR
Dawson Griffin
Dawson Griffin 6'8" | C/PF | 2027
AR
Kayden Primus
Kayden Primus 6'1" | CG/PG | 2028
TX
Bo Bell II
Bo Bell II 6'1" | SG | 2027
AR
<!-- wp:paragraph --> <p>The Proving Grounds Combine at Harding University brought together a deep group of prospects, and the testing phase made it clear who's trending up. From wingspan to agility to vertical lift, several players separated themselves with numbers that matched what they showed in live action. Below is a look at the athletes who graded out best across the board. Keep us updated on ALL prospects over on “X“ and “Instagram,” just tag @PrepHoops_AR &amp; @VortexSportsArkansas.</p> <!-- /wp:paragraph --> <!-- wp:table {"className":"is-style-stripes"} --> <figure class="wp-block-table is-style-stripes"><table class="has-fixed-layout"><tbody><tr><td></td><td class="has-text-align-center" data-align="center"><strong><span style="text-decoration: underline">Wingspan</span></strong></td><td class="has-text-align-center" data-align="center"><strong><span style="text-decoration: underline">3/4 Court Sprint</span></strong></td><td class="has-text-align-center" data-align="center"><strong><span style="text-decoration: underline">Max Vertical</span></strong></td><td class="has-text-align-center" data-align="center"><strong><span style="text-decoration: underline">Lane Agility</span></strong></td></tr><tr><td>#1</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2404469' first='Dawson' last='Griffin'] (6'9 1/2")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2847858' first='Cooper' last='Davis'] (3.12)</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2404469' first='Dawson' last='Griffin'] (11'3")</td><td class="has-text-align-center" data-align="center">Brooks Hickam (9.99)</td></tr><tr><td>#2</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2885559' first='Kye' last='Watkins'] (6'7 1/2")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='3628762' first='Braxton' last='Whitener'] (3.19)</td><td class="has-text-align-center" data-align="center">KJ Johnson (11'0")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2344514' first='Kayden' last='Primus'] (10.06)</td></tr><tr><td>#3</td><td class="has-text-align-center" data-align="center">KJ Johnson (6'7")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2885497' first='Liam' last='Henry'] (3.20)</td><td class="has-text-align-center" data-align="center">Carson Douglas (10'11")</td><td class="has-text-align-center" data-align="center">Kennedy Jones (10.21)</td></tr><tr><td>#4</td><td class="has-text-align-center" data-align="center">Demu Berg (6'7")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2344514' first='Kayden' last='Primus'] (3.21)</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2344514' first='Kayden' last='Primus'] (10'9")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2315403' first='Bo' last='Bell II'] (10.32)</td></tr><tr><td>#5</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2916032' first='Kingston' last='Rottinghaus'] (6'7")</td><td class="has-text-align-center" data-align="center">Brooks Hickam (3.25)</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2916032' first='Kingston' last='Rottinghaus']/<br>[player_tooltip player_id='2847864' first='KJ' last='Addison'] (10'9")</td><td class="has-text-align-center" data-align="center">[player_tooltip player_id='2847858' first='Cooper' last='Davis'] (10.40)</td></tr></tbody></table></figure> <!-- /wp:table --> <!-- wp:separator --> <hr class="wp-block-separator has-alpha-channel-opacity" /> <!-- /wp:separator --> <!-- wp:acf/table-import {"name":"acf/table-import","data":{"import_file":"","_import_file":"field_637be8ff37223"},"mode":"preview","alignText":"left","anchor":"acf-block-6a43f2e4bfcf4"} /--> <!-- wp:paragraph --> <p>Top Overall Tester: 2028 G [player_tooltip player_id='2344514' first='Kayden' last='Primus'] - Walnut Grove High School (TX) (Top 5 in 3 out of 4 testing categories)</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>[player_tooltip player_id='2344514' first='Kayden' last='Primus'] dominated the combine testing phase, finishing Top 5 in 3 categories and backing it up with his production in live play. He clocked a 3.21secs in the ¾ sprint, posted a 10'9" vertical, and recorded a 10.06 secs lane agility, showing elite movement patterns across speed, explosiveness, and change‑of‑direction. That athletic profile translated directly to the court as Kayden played like a slashing guard, finishing tough drives, creating pressure off the bounce, and moving back and forth comfortably on or off the ball throughout the day.</p> <!-- /wp:paragraph --> <!-- wp:separator --> <hr class="wp-block-separator has-alpha-channel-opacity" /> <!-- /wp:separator --> <!-- wp:paragraph --> <p>Best Big in the Building: 2027 F [player_tooltip player_id='2404469' first='Dawson' last='Griffin'] - Sheridan High School (AR) (Top wingspan and max vertical)</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>[player_tooltip player_id='2404469' first='Dawson' last='Griffin'] measured with a 6'9½" wingspan and posted an impressive 11'3" max vertical, and those numbers showed up immediately in how he played. He used his size well, kept strong hands on everything around the rim, and rebounded in traffic throughout live action. Griffin made steady, winning plays from the post by sealing, finishing, and controlling his area possession after possession. He showed the kind of measurables that matter for a forward his size, and he backed them up against the rest of the field.</p> <!-- /wp:paragraph --> <!-- wp:separator --> <hr class="wp-block-separator has-alpha-channel-opacity" /> <!-- /wp:separator --> <!-- wp:paragraph --> <p>Standout Testers</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Wingspan Testers: [player_tooltip player_id='2885559' first='Kye' last='Watkins'], Demu Berg</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Both showed length that impacted them in live play through rebounding and playing in the passing lanes.</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>3/4 Court Sprint: [player_tooltip player_id='2885497' first='Liam' last='Henry']</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Fastest straight‑line ball handler in the gym, got to the lane with ease, breezed through traffic in transition.</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Max Vertical: Carson Douglas</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>His rise and pop proved to be useful on both ends of the floor for putbacks and drop offs.</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Lane Agility: Brooks Hickam, Kennedy Jones</p> <!-- /wp:paragraph --> <!-- wp:paragraph --> <p>Quick, balanced movers who changed direction better than most of the field, where it showed defending drives.</p> <!-- /wp:paragraph -->

The Proving Grounds Combine at Harding University brought together a deep group of prospects, and the testing phase made it clear who's trending up. From wingspan to agility to vertical lift, several players separated themselves with numbers that matched what they showed in live action. Below is a look at the athletes who graded out best across the board. Keep us updated on ALL prospects over on “X“ and “Instagram,” just tag @PrepHoops_AR & @VortexSportsArkansas.

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