Contender

NBA player-prop analysis that shows its work and keeps its evidence.

   

_{Live product · NBA · Designed and built by Davis Higgins}

---

See it in motion

_{Real capture of the public product page at contender.davishiggins.com. Player photo blurred. Static frame}

What it does

• One prop, every relevant layer. Pick a player, a scheduled game, and a market, then enter your own line. The projection, margin against the line, recent form, hit rates, matchup context, reasons, and risks all land on one screen.
• Results that don't drift. Every saved analysis is a snapshot. Reopen one and you see exactly what Contender said, and historical replays are graded with misses left visible.
• Parlays without hidden assumptions. Build two- to four-leg parlays, see a combined view of the legs, and get flagged when legs depend on each other or contradict one another.

Why I built it

Most prop tools hand over a pick and hide everything behind it. A bare number can't be checked, and when it misses there's no record of what the tool actually said.

I built Contender as an analysis tool rather than a pick service. Transparency is the product: every number traces to its source, every estimate says what kind of estimate it is, and nothing gets quietly rewritten after the game.

What I built

I designed and built Contender end to end. It grew out of Propify, my earlier NBA analytics project, into a full rebuild.

• Product and visual design across the marketing site, analyzer, history, and parlay builder
• The data platform that collects and versions NBA schedules and results
• The analysis engine and the services that run it
• Accounts, plans, and billing
• Methodology pages that explain every metric in plain language

How it's put together

flowchart TB
    U[Player, game,<br/>market, and line] --> W[Contender web app]
    W --> S[Analysis services]
    D[Versioned NBA data] --> S
    S --> R[Finished analysis<br/>saved as a snapshot]
    R --> H[History and parlays]

Loading

Decision	Why
Every result is a snapshot	An analysis is saved exactly as it was produced, along with the data behind it. Old results are never silently recomputed, and a replay can't see games that happened later.
Every number says what it is	Observed stats, projections, and estimates are labeled differently, so users always know how much weight a number deserves.
Analysis stays on the server	The browser only shows finished results. Requests are authenticated, and usage is counted fairly even when a connection retries.

Screens

_{Homepage · Historical replay with evidence (player photo blurred) · Parlay analysis on mobile}

Technology

Layer	Technology
Web app	Next.js, TypeScript, Tailwind CSS
Services	Python
Data	Postgres (Supabase)
Accounts and billing	Clerk, Stripe
Hosting	Vercel

---

 

_{© 2026 Davis Higgins. All rights reserved. Contender and its logo belong to Davis Higgins. NBA team and player names are used descriptively.}