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Sienna Williams

Sienna Williams

Sienna Williams

Power Forward/Small Forward
2027 Class
6'3" Height
Monarch School
Mountain West Premier Club
State Rank
Position Rank
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​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Sienna looks healthy and confident to start the season. She can score from all three levels regardless of...
Evaluation by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
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About Sienna

Sienna Williams is a 6'3" Power Forward/Small Forward in the 2027 class. Williams attends Monarch in Colorado and plays club basketball for Mountain West Premier. Williams's Player Profile was created on October 23, 2023. Subscribe to Prep Girls Hoops to see where Sienna Williams is ranked and what our scouts have written about them.

Expert Analysis

​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Mountain West Premier Standouts to Start the AAU Season
Sienna looks healthy and confident to start the season. She can score from all three levels regardless of...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Buckets on Demand: 6A’s Leading Scorers Setting the Pace
It’s not just Sienna’s height that creates problems for teams. Her ability to knock down the three and...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Nothing Easy at the Rim: 6A’s Leading Shot Blockers at Midseason
Sienna does so many things for her team that her shot blocking ability can sometimes be overlooked. She...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Owning the Glass: 6A’s Top Rebounders Making a Difference
Sienna is a matchup nightmare for most teams especially with her ability to rebound at a high level....
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Summer Recap: When Opportunity Met Impact
Sienna Williams found herself in the perfect spot to show her full skill set this summer. She knocked...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
New Firepower: Breaking Down the New Top 5 in the 2027 Rankings
After attending the USA trials, Sienna Williams has stepped into a more prominent role with Mountain West Premier...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Spring Live Period Standouts: Talent on Full Display
Sienna Williams continued her strong spring campaign by picking up more offers thanks to her versatility and shot-making...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Spring Standouts: 17U Girls Making Noise This Season (Part Two)
Sienna Williams has stepped into a bigger role this spring, becoming a key offensive piece for her squad....
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Colorado’s Top Rebounders Dominating the Boards at Midseason
Leading the state with an impressive 18.2 rebounds per game, forward Sienna Williams has been a powerhouse for...
Written by Brandyn Newbins
Read more at PrepGirlsHoops​.com
Prep Girls Hoops
​
Sienna
Williams PF/SF
Class
2027
Height
6'3"
HS
Monarch
|
CO
Colorado: Sophomores Controlling The Glass
Sienna Williams continues to prove why she’s a top 3 player in the state. Williams dominates the boards...
Written by Logan Benson
Read more at PrepGirlsHoops​.com
Prep Girls Hoops

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna looks healthy and confident to start the season. She can score from all three levels regardless of who is guarding her, showing poise and skill. What’s just as impressive is her willingness to anchor the paint defensively and protect the rim.

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3 months ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

It’s not just Sienna’s height that creates problems for teams. Her ability to knock down the three and get to the mid-range and shoot over defenders makes her tough to guard. That allows her to score no matter how teams try to defend her.

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6 months ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna does so many things for her team that her shot blocking ability can sometimes be overlooked. She is a defensive anchor who times her blocks perfectly as a help side defender. Even when players think they have a clean floater or runner, she gets off the ground quickly and proves otherwise.

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6 months ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna is a matchup nightmare for most teams especially with her ability to rebound at a high level. What separates her is how she controls the game through rebounding, whether it’s kick-starting transition buckets or creating second-chance opportunities. She’s also capable of grabbing the board and going herself making her impact felt.

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6 months ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO found herself in the perfect spot to show her full skill set this summer. She knocked down the three, ran the floor hard in transition, and finished at the rim through contact. Whether playing face-up or with her back to the basket, she proved hard to stop.

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Subscribe to read about this player

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11 months ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

After attending the USA trials, Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO has stepped into a more prominent role with Mountain West Premier and takes over the top spot in the 2027 class. She’s become more efficient as a stretch-four, finishing through contact and spacing the floor with confidence. Her improved energy on the defensive end has made her a more complete and valuable presence on the court.

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Subscribe to read about this player

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1 year ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO continued her strong spring campaign by picking up more offers thanks to her versatility and shot-making ability. She consistently stretched the floor, knocked down shots with confidence, finished in the paint, and ran the floor hard in transition to give her team a major spark.

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Subscribe to read about this player

Read Evaluation
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1 year ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO has stepped into a bigger role this spring, becoming a key offensive piece for her squad. She can score in the paint and is confident knocking down open jumpers from the perimeter. Defensively she’s made strides guarding the perimeter while still being able to alter shots around the rim without fouling.

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1 year ago

Brandyn Newbins | Prep Girls Hoops Scout

Brandyn Newbins

Brandyn Newbins

Prep Girls Hoops Lead Scout

@Bnewbins4 @BNew104 brandyn.newbins@me.com

Leading the state with an impressive 18.2 rebounds per game, forward Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO has been a powerhouse for Monarch. Her relentless pursuit of the ball creates numerous second-chance opportunities for her team, effectively dominating the paint. Defensively, she limits opponents to a single shot per possession, enabling Monarch to excel in transition. Despite a 3-4 record at the break, Williams’ contributions position her team for a strong second-half push.

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2 years ago

Logan Benson | Prep Girls Hoops Scout

Logan Benson

Logan Benson

Prep Girls Hoops Scout

@bennyinhisbag @itsloganbenson bensonla34@gmail.com

Sienna Williams Sienna Williams Sienna Williams 6'3" | PF/SF Monarch | 2027 State CO continues to prove why she’s a top 3 player in the state. Williams dominates the boards and secures every ball that comes her way. Sienna is a handful for any defense to take care of. At 6’3, Williams solidifies herself as one of most prominent names in Colorado.

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2 years ago

Player Claimed

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News

Section 7 Players to Watch: OrthoArizona Bracket

Section 7 Players to Watch: OrthoArizona Bracket

Cedric Cobb • June 17, 2026

Mountain West Premier Standouts to Start the AAU Season

Mountain West Premier Standouts to Start the AAU Season

Brandyn Newbins • April 19, 2026

5 under-the-radar prospects in Colorado's 5A postseason

5 under-the-radar prospects in Colorado's 5A postseason

Brent New • February 23, 2026

Standouts from Monarch-Holy Family not named Sienna Williams

Standouts from Monarch-Holy Family not named Sienna Williams

Brent New • January 8, 2026

Buckets on Demand: 6A’s Leading Scorers Setting the Pace

Buckets on Demand: 6A’s Leading Scorers Setting the Pace

Brandyn Newbins • December 31, 2025

Nothing Easy at the Rim: 6A’s Leading Shot Blockers at Midseason

Nothing Easy at the Rim: 6A’s Leading Shot Blockers at Midseason

Brandyn Newbins • December 29, 2025

Season Stats

Cumulative totals auto-calculated from your game entries below.

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Game Stats

Individual game performance for the 2025-26 season.

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Game PTS FGM FGA FG% 3PM 3PA 3P% FTA FTM FT% OREB DREB REB STL AST BLK TO
2/28 vs Denver East
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2/25 vs Vista Ridge
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2/21 vs Broomfield
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2/20 vs Centaurus
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2/17 vs Silver Creek
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2/14 vs Riverdale Ridge
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2/12 vs Fairview
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2/10 vs Niwot
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2/06 vs Legacy
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2/04 vs Northfield
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2/03 vs Longmont
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1/30 vs Broomfield
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1/27 vs Frederick
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1/22 vs Prairie View
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1/16 vs Erie
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1/13 vs Mead
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1/09 vs Horizon
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1/08 vs Rocky Mountain
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1/06 vs Holy Family
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12/16 vs Boulder
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12/11 vs Denver South
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12/09 vs Arvada West
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12/06 vs Skyview
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12/04 vs Chaparral
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12/02 vs Northfield
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