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Crown Green Handicap

Gerry Birch

Team: Upton Victory HallDivision: League 1Last updated: 9/29/2026

Rating

954

Current Handicap

7
Honours
Season:

14

Matches Played

11

Wins

3

Losses

79%

Win Rate

10.2

Avg Win Margin

6.7

Avg Loss Margin

11-3

Home Record

0-0

Away Record

Milestones

Career

No career milestones yet — keep bowling!

Next goal: Hot Streak 158/15

Season Highlights

No season milestones recorded yet.

Handicap Trend

All Time · 14 matches

+7 Rising
20 May3 Jun13 Jun1 Jul29 Jul8 Aug31 Jul-12510
Started0
Lowest0
Current7
Win Percentage(40%)
79%
score+0.57→contribution+0.23
Avg Winning Margin(25%)
10.2
score+0.36→contribution+0.09
Avg Losing Margin(15%)
6.7
score+0.22→contribution+0.03
Recent Form (last 20)(10%)
79%
score+0.57→contribution+0.06
Opponent Strength(10%)
883
score+0.45→contribution+0.05
Weighted Score+0.455
Sample Size Confidence
3%(14/75 matches)
Rating1228 → shrunk 1008
Handicap7

Formula: Rating = 1000 + (weighted score × 500). Each factor is normalized to −1…+1, multiplied by its weight, then summed. Bayesian shrinkage: the raw rating is pulled toward 1000 by a confidence factor (matches ÷ 75), so players with few games don't get extreme handicaps. Recency blend: the shrunk all-time rating is blended with a separate rating from the seasons selected in Handicap Calculation Years (currently 2024, 2025, 2026), weighted up to 40% based on recent match volume (30+ matches = full 40%). Players with no recent matches keep their all-time rating unchanged. Rating is mapped to handicap 0–15 (lower = stronger).

League

11W3L14 matches·78.6% win rate
ClubSeasonsDivision(s)PWLWin %
Upton Victory Hall2016–2017League 175271.4%
Upton Victory Hall B2016League 276185.7%
DateOpponentH/AScoreResultMarginCompetitionDivision
7/31/2017Graham WalkerH12-21LOSS-9LeagueLeague 1
6/16/2017Barry SmithH21-13WIN+8LeagueLeague 1
8/8/2016Tom DavisH21-18WIN+3LeagueLeague 1
8/5/2016John KellyH17-21LOSS-4LeagueLeague 2
7/29/2016Ted SullivanH21-10WIN+11LeagueLeague 2
7/8/2016Chris HeggH14-21LOSS-7LeagueLeague 1
7/1/2016John MinnisH21-9WIN+12LeagueLeague 2
6/17/2016Margie RatcliffH21-10WIN+11LeagueLeague 2
6/13/2016Ann BrownH21-15WIN+6LeagueLeague 2
6/10/2016Phil NorburyH21-9WIN+12LeagueLeague 1
6/3/2016Dave RatcliffH21-12WIN+9LeagueLeague 2
5/27/2016Andy WainwrightH21-8WIN+13LeagueLeague 1
5/20/2016Phil CritchleyH21-7WIN+14LeagueLeague 2
5/16/2016Margaret CafferyH21-8WIN+13LeagueLeague 1

Current Streak

1losses

In a slump

Longest Win Run

8

Career best winning streak

Longest Loss Run

1

Career worst losing streak

Last 560% win rate
LWWLW
Last 1070% win rate— steady
LWWLWLWWWW
OpponentWLTotalWin %Last Met
Graham Walker0110%7/31/2017
Barry Smith101100%6/16/2017
Tom Davis101100%8/8/2016
John Kelly0110%8/5/2016
Ted Sullivan101100%7/29/2016
Chris Hegg0110%7/8/2016
John Minnis101100%7/1/2016
Margie Ratcliff101100%6/17/2016
Ann Brown101100%6/13/2016
Phil Norbury101100%6/10/2016
Biggest Win
Phil Critchley (+14)5/20/2016
Heaviest Defeat
Graham Walker (-9)7/31/2017
Best Season
201683% · 12 matches
Worst Season
201683% · 12 matches
Form Arc (1st half → 2nd half)
100% → 57%declining
Avg Opponent Rating Faced
86312 known · 2 unknown
vs Strong Opponents (rating ≥ 1000)
2-167% win rate
vs Weak Opponents (rating < 1000)
7-278% win rate

By Division

League 15-2 (71%)
League 26-1 (86%)
League 171.4%
5W·2L·7 played
League 285.7%
6W·1L·7 played

Debut

May 16, 2016

Latest

Jul 31, 2017

Seasons Active

2 (1.2 yr span)

Matches / Season

7.0 (14 total)

Seasons

20162017