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Crown Green Handicap

Derek Byrom

Team: Heswall Rbl BDivision: Division BLast updated: 10/24/2026

Rating

841

Current Handicap

9
Honours
Season:

26

Matches Played

13

Wins

13

Losses

50%

Win Rate

7.8

Avg Win Margin

8.2

Avg Loss Margin

7-6

Home Record

6-7

Away Record

62%

Handicap Confidence

Moderately Reliable
26 / 33 matches for full confidence· Last recorded match: 8/21/2018

A solid recent sample: 26 of 33 matches needed for full confidence in the 2022, 2023, 2024, 2025, 2026 window. The handicap is settling and now moves mainly with form.

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 · 26 matches

+9 Rising
31 May6 Jul21 Jul15 May28 Jun12 Jul26 Jul21 Aug-13712
Started0
Lowest0
Current9
Win Percentage(35%)
50%
score+0.00→contribution+0.00
Avg Winning Margin(23%)
7.8
score-0.03→contribution-0.01
Avg Losing Margin(15%)
8.2
score-0.03→contribution-0.00
Recent Form (last 20)(10%)
55%
score+0.10→contribution+0.01
Opponent Strength(15%)
933
score-0.07→contribution-0.01
Weighted Score-0.011
Sample Size Confidence
62%(26/33 matches)
Rating996 → shrunk 998→ adjusted 841
Handicap
9

Formula: Rating = 1000 + (weighted score × 400). Each factor is normalized to −1…+1, multiplied by its weight, then summed. Window: factors are computed from the Handicap Calculation Years only (2022, 2023, 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 ÷ 33, 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

13W13L26 matches·50% win rate
ClubSeasonsDivision(s)PWLWin %
Heswall Rbl B2016–2018Division B, Division C26131350%
DateOpponentH/AScoreResultMarginCompetitionDivision
8/21/2018Les DaviesA21-15WIN+6LeagueDivision B
8/16/2018Steve RowlandH14-21LOSS-7LeagueDivision B
8/9/2018Margaret CafferyH21-10WIN+11LeagueDivision B
8/2/2018Ray PriceA13-21LOSS-8LeagueDivision B
7/26/2018David WhitesideA21-16WIN+5LeagueDivision B
7/24/2018Atrau CharltonH21-13WIN+8LeagueDivision B
7/17/2018Ray WilliamsA21-16WIN+5LeagueDivision B
7/12/2018Lewis BullenA21-13WIN+8LeagueDivision B
7/10/2018Katie WoodH21-15WIN+6LeagueDivision B
7/5/2018Colin DraperH11-21LOSS-10LeagueDivision B
6/28/2018Eric SantH21-11WIN+10LeagueDivision B
6/14/2018Billy HubbertH18-21LOSS-3LeagueDivision B
6/7/2018Tony JohnsonA15-21LOSS-6LeagueDivision B
5/24/2018Barry EmeryA10-21LOSS-11LeagueDivision B
5/15/2018John CliffeH14-21LOSS-7LeagueDivision B
8/8/2016vs Bromborough Recs BA21-10WIN+11LeagueDivision C
8/2/2016Robert KellA11-21LOSS-10LeagueDivision C
7/28/2016Sally PovallH21-18WIN+3LeagueDivision C
7/21/2016Brenda CoppleA21-17WIN+4LeagueDivision C
7/14/2016Thomas RaybouldA11-21LOSS-10LeagueDivision C
7/12/2016Chris KissackH12-21LOSS-9LeagueDivision C
7/6/2016Nicky BaileyA18-21LOSS-3LeagueDivision C
6/7/2016Brian WilliamsH21-8WIN+13LeagueDivision C
6/1/2016vs Hoylake CentralA8-21LOSS-13LeagueDivision C
5/31/2016Fred DohertyH21-9WIN+12LeagueDivision C
5/17/2016Thomas RaybouldH12-21LOSS-9LeagueDivision C
Geoff Clare Trophy1 games · 1W
20161 round
RoundOpponentTeamScoreResultTeam
Quarters RoundAlan SmithOxton Cons C21-13WINWON
George ONeill Trophy1 games · 0W
20161 round
RoundOpponentTeamScoreResultTeam
Round of 32 RoundJohn Mountford / Aaron RichardsKendal7-15LOSSLOST

Current Streak

1wins

On a hot run

Longest Win Run

5

Career best winning streak

Longest Loss Run

4

Career worst losing streak

Last 560% win rate
WLWLW
Last 1070% win rate— steady
WLWLWWWWWL
OpponentWLTotalWin %Last Met
Thomas Raybould0220%7/14/2016
Les Davies101100%8/21/2018
Steve Rowland0110%8/16/2018
Margaret Caffery101100%8/9/2018
Ray Price0110%8/2/2018
David Whiteside101100%7/26/2018
Atrau Charlton101100%7/24/2018
Ray Williams101100%7/17/2018
Lewis Bullen101100%7/12/2018
Katie Wood101100%7/10/2018
Biggest Win
Brian Williams (+13)6/7/2016
Heaviest Defeat
Unknown (-13)6/1/2016
Best Season
201853% · 15 matches
Worst Season
201645% · 11 matches
Form Arc (1st half → 2nd half)
38% → 62%improving
Avg Opponent Rating Faced
91721 known · 5 unknown
vs Strong Opponents (rating ≥ 1000)
1-325% win rate
vs Weak Opponents (rating < 1000)
9-853% win rate

By Division

Division B8-7 (53%)
Division C5-6 (45%)
Division B53.3%
8W·7L·15 played
Division C45.5%
5W·6L·11 played

Debut

May 17, 2016

Latest

Aug 21, 2018

Seasons Active

2 (2.3 yr span)

Matches / Season

13.0 (26 total)

Seasons

20162018