FairPlay BowlsCreated by bowlers, for bowlers

Live

Birkenhead Sync08/09/2026|

Back to Players

David Grundy

Team: Thingwall BDivision: Division CLast updated: 9/29/2026

Rating

799

Current Handicap

Honours

Season:

Matches Played

Wins

Losses

64%

Win Rate

4.9

Avg Win Margin

9.5

Avg Loss Margin

6-1

Home Record

1-3

Away Record

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

+10 Rising

Started0

Lowest0

Current10

Win Percentage(35%)

64%

score+0.27→contribution+0.10

Avg Winning Margin(23%)

4.9

score-0.52→contribution-0.12

Avg Losing Margin(15%)

9.5

score-0.25→contribution-0.04

Recent Form (last 20)(10%)

64%

score+0.27→contribution+0.03

Opponent Strength(15%)

888

score+0.14→contribution+0.02

Weighted Score-0.015

Sample Size Confidence

2%(11/75 matches)

Rating994 → shrunk 1000→ adjusted 800

Handicap10

Formula: Rating = 1000 + (weighted score × 400). 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 2022, 2023, 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

7W4L11 matches·63.6% win rate

Club	Seasons	Division(s)	P	W	L	Win %
Thingwall B	2016–2019	Division C	11	7	4	63.6%

Date	Opponent	H/A	Score	Result	Margin	Competition	Division
8/6/2019	Trevor Duckers	H	20-21	LOSS	-1	League	Division C
7/4/2019	Pauline Shea	H	21-19	WIN	+2	League	Division C
6/26/2019	vs Hoylake Central & Melrose	A	11-21	LOSS	-10	League	Division C
6/25/2019	vs Pt Sunlight Vill & Wks B	H	21-19	WIN	+2	League	Division C
6/20/2019	John Markland	H	21-9	WIN	+12	League	Division C
5/30/2019	Ken Zeller	H	21-19	WIN	+2	League	Division C
5/16/2019	Roy Biggs	H	21-13	WIN	+8	League	Division C
7/25/2017	Peter Prowse	A	21-15	WIN	+6	League	Division C
7/4/2017	Graham Wright	A	11-21	LOSS	-10	League	Division C
6/23/2016	Doreen Johnson	H	21-19	WIN	+2	League	Division C
6/15/2016	vs Hoylake Central	A	4-21	LOSS	-17	League	Division C

George ONeill Trophy2 games · 0W

20191 round

Round	Opponent	Team	Score	Result	Team
Round of 16 Round	Steve Snow / Mark Hadfield	Oxton Cons	2-15	LOSS	LOST

20161 round

Round	Opponent	Team	Score	Result	Team
Round of 32 Round	John Markland / Kenneth Williams	Sea Dog	12-15	LOSS	WON

Current Streak

1losses

In a slump

Longest Win Run

Career best winning streak

Longest Loss Run

Career worst losing streak

Last 560% win rate

LWLWW

Last 1070% win rate— steady

LWLWWWWWLW

Opponent	W	L	Total	Win %	Last Met
Trevor Duckers	0	1	1	0%	8/6/2019
Pauline Shea	1	0	1	100%	7/4/2019
Hoylake Central & Melrose	0	1	1	0%	6/26/2019
Pt Sunlight Vill & Wks B	1	0	1	100%	6/25/2019
John Markland	1	0	1	100%	6/20/2019
Ken Zeller	1	0	1	100%	5/30/2019
Roy Biggs	1	0	1	100%	5/16/2019
Peter Prowse	1	0	1	100%	7/25/2017
Graham Wright	0	1	1	0%	7/4/2017
Doreen Johnson	1	0	1	100%	6/23/2016

Biggest Win

John Markland (+12)6/20/2019

Heaviest Defeat

Unknown (-17)6/15/2016

Form Arc (1st half → 2nd half)

60% → 67%improving

Avg Opponent Rating Faced

8458 known · 3 unknown

vs Strong Opponents (rating ≥ 1000)

0-10% win rate

vs Weak Opponents (rating < 1000)

6-186% win rate

Division C63.6%

7W·4L·11 played

Debut

Jun 15, 2016

Latest

Aug 6, 2019

Seasons Active

3 (3.1 yr span)

Matches / Season

3.7 (11 total)

Seasons

201620172019