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Birkenhead Sync08/09/2026|
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Crown Green Handicap

Stephen Potter

Team: Carr Mill BDivision: Division 3Last updated: 10/24/2026

Rating

650

Current Handicap

15
Honours
Season:

11

Matches Played

6

Wins

5

Losses

55%

Win Rate

6.5

Avg Win Margin

7.0

Avg Loss Margin

5-2

Home Record

1-3

Away Record

7%

Handicap Confidence

Low Confidence
11 / 41 matches for full confidence· Last recorded match: 8/26/2026

Only 11 of the 41 matches needed for full confidence in the 2024, 2025, 2026 window. The rating is pulled toward the league average, so the handicap may shift noticeably as more results arrive.

Milestones

Career

No career milestones yet — keep bowling!

Next goal: Hot Streak 155/15
✦SEASON HIGHLIGHTS

No season milestones recorded yet.

Handicap Trend

All Time · 11 matches

+15 Rising
Win on the night Loss on the nightLower handicap = stronger player

The line re-checks the handicap after every match — from results, winning and losing margins, the strength of who was played, and home or away. Each dot is the number that applied going into the next game.

2 Jun7 Jul14 Jul28 Jul12 Aug26 Aug-14916

Gives 15 more chalks than at the start of this period.

Started0
Lowest0
Current15
Win Percentage(40%)
55%
score+0.09→contribution+0.04
Avg Winning Margin(25%)
6.5
score-0.25→contribution-0.06
Avg Losing Margin(15%)
7.0
score+0.17→contribution+0.02
Recent Form (last 20)(10%)
55%
score+0.09→contribution+0.01
Opponent Strength(10%)
716
score-0.24→contribution-0.02
Weighted Score-0.016
Sample Size Confidence
7%(11/41 matches)
Rating995 → shrunk 1000→ adjusted 650
Recent 3-Season Rating (2024, 2025, 2026)649
Recency Blend15% (11 recent matches)
Final Rating650
Handicap
15

Formula: Rating = 1000 + (weighted score × 300). Each factor is normalized to −1…+1, multiplied by its weight, then summed. Window: factors are computed from the Handicap Calculation Years only (2024, 2025, 2026), excluding walkovers — the same window the official recalculation uses. Bayesian shrinkage: the raw rating is pulled toward 1000 by confidence (window matches ÷ 41, an adaptive threshold set by the last recalculation). Offsets: division and B/C/D team offsets are then applied, weighted by where each window match was played. Recency blend: the calculation years are re-weighted at up to 40% by match volume. Players with a long career but fewer than 5 window matches fall back to their full career record. Rating maps to handicap 0–15 (lower = stronger) via the league's spread multiplier.

League

6W5L11 matches·54.5% win rate
ClubSeasonsDivision(s)PWLWin %
Carr Mill B2026Division 3116554.5%
DateOpponentH/AScoreResultMarginCompetitionDivision
8/26/2026Mike OxleyA16-21LOSS-5LeagueDivision 3
8/18/2026David DuffyH21-15WIN+6LeagueDivision 3
8/12/2026Barry CainA14-21LOSS-7LeagueDivision 3
8/4/2026Ken BibbyH20-21LOSS-1LeagueDivision 3
7/28/2026Ron VizardA5-21LOSS-16LeagueDivision 3
7/21/2026Steve RoseH21-20WIN+1LeagueDivision 3
7/14/2026Joseph KnocktonH21-8WIN+13LeagueDivision 3
7/8/2026Tom FrithH21-14WIN+7LeagueDivision 3
7/7/2026John MayerA21-16WIN+5LeagueDivision 3
6/16/2026Mike TooleH21-14WIN+7LeagueDivision 3
6/2/2026Jamie RathboneH15-21LOSS-6LeagueDivision 3

Current Streak

1losses

In a slump

Longest Win Run

5

Career best winning streak

Longest Loss Run

3

Career worst losing streak

Last 520% win rate
LWLLL
Last 1060% win rate↓ declining
LWLLLWWWWW
OpponentWLTotalWin %Last Met
Mike Oxley0110%8/26/2026
David Duffy101100%8/18/2026
Barry Cain0110%8/12/2026
Ken Bibby0110%8/4/2026
Ron Vizard0110%7/28/2026
Steve Rose101100%7/21/2026
Joseph Knockton101100%7/14/2026
Tom Frith101100%7/8/2026
John Mayer101100%7/7/2026
Mike Toole101100%6/16/2026
Biggest Win
Joseph Knockton (+13)7/14/2026
Heaviest Defeat
Ron Vizard (-16)7/28/2026
Best Season
202655% · 11 matches
Worst Season
202655% · 11 matches
Form Arc (1st half → 2nd half)
80% → 33%declining
Avg Opponent Rating Faced
71611 known · 0 unknown
vs Weak Opponents (rating < 1000)
6-555% win rate
Division 354.5%
6W·5L·11 played

Debut

Jun 2, 2026

Latest

Aug 26, 2026

Seasons Active

1 (3 mo span)

Matches / Season

11.0 (11 total)

Seasons

2026