MPR starts the forecast.
Results move the line.
Recent results, head-to-head history and MHSAA playoff success shape each Michigan volleyball forecast. Follow the slate or build your own what-if.
How does MHSAA calculate MPR?
The formula combines a team’s winning percentage (25%), opponents’ winning percentage (50%), and opponents’ opponents’ winning percentage (25%). MPR does not use set scores, margin of victory, home/away location, or how recently a match was played.
Read the MHSAA MPR FAQ ↗Find a matchup
Browse every verified future game in Rallyline’s loaded tournament slate. Filter by day and division, or search either school in a matchup. Completed scores stay separately below.
Coverage details
Every visit requests Rallyline’s latest published feed.Import or inspect schedule data
Recorded season results
Final scores shown here are included in Rallyline’s form and head-to-head adjustments. The current sample is selective, not a complete statewide archive.
Power snapshot
| # | School | Division | MPR | Rallyline rating |
|---|
Model watch
Michigan team index
Search 693 division-assigned schools from the MHSAA MPR snapshot captured Nov. 2, 2026.
| Rank | School | Division | MPR | Rallyline rating |
|---|
MPR is the official Michigan Power Rating. This saved snapshot covers 693 schools assigned to Divisions 1–4. Open the live MHSAA MPR board ↗
Matchup lab
Choose two schools, adjust the scenario, then review the forecast.
The same model structure can run without MPR using submitted match record, set record, recent form and opponent-strength data. Your imported school list stays in this browser.
Results affect team form and repeat-match forecasts. MHSAA Score Center · Marian results · Hudsonville–Lowell recap
Type a name and pick a suggestion.
Type a name and pick a suggestion.
Adjust the model
Start from each school’s MHSAA rating, then add only the context you would discuss before a match. These what-if adjustments do not change official school ratings.
Your forecast will update here as you move either team’s sliders.
Prototype probabilities are model outputs, not guarantees. Predictions become meaningful only after collecting match results and checking them against held-back seasons. Activated forecasts are saved in this browser; they do not publish or alter other viewers’ picks.
Playoff Lab
Follow the bracket by division. See Rallyline’s projected path, or build your own by choosing which team advances from each matchup.
Current first-round pairings come from Rallyline’s verified tournament feed. Later rounds follow MHSAA’s bracket path. In the model bracket, each unplayed matchup shows a win chance, the most likely best-of-five set count, and the strongest available reasons for the lean: MPR baseline, recent results, head-to-head history and recency-weighted MHSAA finals history. The history data counts state titles and runner-up finishes across 1976–2025. These describe the model—not a guarantee. Rallyline does not project individual set point scores because the current data does not support that level of precision.
A final score from Rallyline’s results feed advances the actual winner. In “Build your bracket,” future slots stay blank until you select winners in the preceding round. After each choice, Rallyline reveals how your pick compares with the model and updates your private Bracket Pulse. Your picks stay in this browser.
This is bracket play, not prophecy. Rallyline is an independent fan project. Picks, grades and projected scores are experimental, purely for fun and never official MHSAA predictions, rankings or results.
Upset watch
Sample matchups where the lower-rated side has a believable path.
How Rallyline works
A volleyball model, not just a leaderboard.
The forecast starts with each team’s MHSAA MPR. We convert the rating gap to a win chance with a steeper curve than the first version, so real rating differences separate the predictions more clearly (a six-point edge is about 76% before other factors). MPR already reflects team record and schedule strength, so Rallyline does not add raw win percentage again.
Completed match results add two bounded signals: a small opponent-adjusted form correction across the entered results, and a recency-weighted head-to-head correction for teams that have played each other. The direct-series adjustment is capped so one or two matches can move a forecast without overruling the season baseline. Viewer sliders then add lineup, set-performance, matchup-style, venue and roster-strength what-ifs.
MHSAA history is part of every Michigan forecast. The model uses official state champions and runners-up from 1976–2025, across the MHSAA classes, divisions, and historical formats shown in its archive. A title contributes more than a runner-up finish; both fade with an approximately 11-year half-life, and the per-team historical edge is capped at 2 points. A true 50/50 matchup can move at most to about 59% from this factor alone. This is a small, evidence-based nod to program postseason success—not a guarantee that past teams or coaches predict this year’s roster. MHSAA Past Champions ↗
In the matchup lab, the roster-strength slider is a separate viewer-supplied what-if for talent, depth, returning contributors, or roster changes not captured by the rating baseline. It is not an objective player evaluation. On custom-state datasets, Michigan postseason history is not applied.
Rallyline updates its saved tournament slate and results daily from MHSAA brackets and Score Center, supplemented by reliable local reporting when the official feed has not posted a result. Division filters use the division recorded with each match or the schools’ MPR division. Head-to-head and form effects decay with age, and the direct-series effect is capped. The saved feed is still coverage-limited: unverified scores are never inferred, and probabilities remain experimental and not back-tested.
MHSAA MPR FAQ ↗ · Live Michigan ratings ↗ · MHSAA Score Center ↗. Rallyline is an independent fan project, not an MHSAA product or a player evaluation service.
For fun. Full stop.
Rallyline is a volleyball sandbox. Use it to explore matchups, build brackets and argue about what might happen—then let the teams settle it on the court. Every forecast, percentage and projected set score is experimental and purely for entertainment.
Nothing here is official. Rallyline does not publish official scores, standings, rankings, recruiting evaluations, scouting reports, wagering lines or guarantees. Schedules and results may be incomplete or delayed, so confirm them with the MHSAA or the school.
Independent project. Rallyline is not affiliated with or endorsed by the MHSAA, any school or any athletic association. Names and marks belong to their respective owners and are used only to identify teams.
Your data stays with you. Rallyline has no user accounts or player profiles. Search selections, imported CSVs and activated scenarios are saved in your browser and are not sent to Rallyline. The site loads typefaces from Google Fonts; see Google’s Privacy Policy. Please do not send private or sensitive student-athlete information through social media.
Questions or corrections. A Rallyline Instagram contact link will be added when the brand account launches.