Bullpen Ledger.
Does recent workload help predict a reliever’s next appearance? Explore pitcher histories, rest patterns and a Toronto velocity case study—with an honest test of what the data can tell us.
Explore the researchA test on a later season.
Interactive pitcher dossiers, 2025 evaluation, confidence intervals and reproducible analysis. Recent workload did not clearly improve this model’s predictions.
The Cash Drag.
What did liquidity cost—and when did it help? Explore cash reserves, portfolio growth and purchasing power through an interactive Canadian-dollar study.
Explore the projectPurchasing power tomorrow.
Adjust cash allocations and withdrawals. Compare inflation-adjusted outcomes using published Canadian fund returns and CPI data.
Behind the
numbers.
Beyond the
obvious.
I’m Daiki. I explore the stories hiding in business performance and sports economics—through research, dashboards, and predictive models.
Explore my worka clearer perspective.
At a glance / the scale of the work
01 / Featured research
A QUESTION WORTH ASKINGThe Bench
Dividend.
Does regular season bench investment translate to playoff bench production? An analysis of three NBA seasons explores the relationship—and its limitations.
Read the researchWho got the most from the bench?
Average playoff points per bench player, ranked. Bar length uses one scale across all seasons.
Source: chart-values.json · 16 team-seasons per year
Bench minutes, season by season
Each dot is a team. The tick marks that season’s median, calculated from the same file.
Average regular-season minutes per bench player
Source: chart-values.json
02 / Selected work
RESEARCH, WITH A POINT OF VIEWA closer look.
A different perspective.
From the economics of a booking to the business of a championship. Choose a project to explore the research, dashboards, and models behind the work.
The Margin Trap
An exploration of product performance, regional differences, and the real cost of discounting across 9,994 retail orders.
The Booking Ledger
A closer look at cancellation risk and revenue protection across more than 119,000 hotel bookings.
Sports Business Intelligence
A comparative view of salary caps, payroll efficiency, revenue structures, and the economics of four major leagues.
Dodgers Impact Analytics
An exploration of Japanese athletes, fan engagement, social growth, and the business value surrounding the Dodgers.
Sports Prediction Models
A collection of Monte Carlo and Elo-based prediction projects spanning soccer, hockey, tennis, UFC, basketball, and baseball.
TennisIQ
The financial side of professional tennis: prize money, tournament revenue, inequality, and player survival.