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Birkenhead Sync08/09/2026|
Birkenhead Sync08/09/2026|
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Crown Green Handicap

Ken Duffy

Team: Rainford North EndDivision: Division 3Last updated: 10/24/2026

Rating

687

Current Handicap

15
Honours
Season:

15

Matches Played

4

Wins

11

Losses

27%

Win Rate

8.3

Avg Win Margin

8.5

Avg Loss Margin

4-2

Home Record

0-9

Away Record

13%

Handicap Confidence

Low Confidence
15 / 41 matches for full confidence· Last recorded match: 8/12/2026

Only 15 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: Decade Player2/10
✦SEASON HIGHLIGHTS

No season milestones recorded yet.

Handicap Trend

All Time · 15 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.

19 Apr17 May14 Jun12 Jul26 Jul16 Aug30 Aug12 Aug-14916

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

Started0
Lowest0
Current15
Win Percentage(40%)
27%
score-0.47→contribution-0.19
Avg Winning Margin(25%)
8.3
score+0.04→contribution+0.01
Avg Losing Margin(15%)
8.5
score-0.08→contribution-0.01
Recent Form (last 20)(10%)
27%
score-0.47→contribution-0.05
Opponent Strength(10%)
752
score-0.79→contribution-0.08
Weighted Score-0.313
Sample Size Confidence
13%(15/41 matches)
Rating906 → shrunk 987→ adjusted 687
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

4W11L15 matches·26.7% win rate
ClubSeasonsDivision(s)PWLWin %
Rainford North End2022–2026Division 31541126.7%
DateOpponentH/AScoreResultMarginCompetitionDivision
8/12/2026Ian AppletonA5-21LOSS-16LeagueDivision 3
10/4/2022Simon ChurchillA10-21LOSS-11LeagueDivision 3
8/30/2022James HopkinsH21-18WIN+3LeagueDivision 3
8/23/2022John StampA9-21LOSS-12LeagueDivision 3
8/16/2022Ken NaylorH21-19WIN+2LeagueDivision 3
8/10/2022K WebsterA16-21LOSS-5LeagueDivision 3
7/26/2022Paul WatkinsonA7-21LOSS-14LeagueDivision 3
7/19/2022Rob BallH21-14WIN+7LeagueDivision 3
7/12/2022Charlie McFarlaneA11-21LOSS-10LeagueDivision 3
6/21/2022James HopkinsA15-21LOSS-6LeagueDivision 3
6/14/2022UnknownH21-0WIN+21LeagueDivision 3
6/7/2022Ken ByromA15-21LOSS-6LeagueDivision 3
5/17/2022Les ClareH18-21LOSS-3LeagueDivision 3
4/26/2022John PickavanceA14-21LOSS-7LeagueDivision 3
4/19/2022John BurrowsH18-21LOSS-3LeagueDivision 3

Current Streak

2losses

In a slump

Longest Win Run

1

Career best winning streak

Longest Loss Run

4

Career worst losing streak

Last 540% win rate
LLWLW
Last 1030% win rate↑ improving
LLWLWLLWLL
OpponentWLTotalWin %Last Met
James Hopkins11250%8/30/2022
Ian Appleton0110%8/12/2026
Simon Churchill0110%10/4/2022
John Stamp0110%8/23/2022
Ken Naylor101100%8/16/2022
K Webster0110%8/10/2022
Paul Watkinson0110%7/26/2022
Rob Ball101100%7/19/2022
Charlie McFarlane0110%7/12/2022
Unknown101100%6/14/2022
Biggest Win
Unknown (+21)6/14/2022
Heaviest Defeat
Ian Appleton (-16)8/12/2026
Best Season
202229% · 14 matches
Worst Season
202229% · 14 matches
Form Arc (1st half → 2nd half)
14% → 38%improving
Avg Opponent Rating Faced
75215 known · 0 unknown
vs Weak Opponents (rating < 1000)
4-1127% win rate
Division 326.7%
4W·11L·15 played

Debut

Apr 19, 2022

Latest

Aug 12, 2026

Seasons Active

2 (4.3 yr span)

Matches / Season

7.5 (15 total)

Seasons

20222026