Harry Koffman
Rating
525
Current Handicap
Needs 1 more match(es)
9
Matches Played
0
Wins
9
Losses
0%
Win Rate
0.0
Avg Win Margin
11.9
Avg Loss Margin
0-4
Home Record
0-5
Away Record
Handicap Confidence
ProvisionalThe handicap is built on a small recent sample (7 matches so far). It is deliberately conservative and will move as more results come in.
Career
No career milestones yet — keep bowling!
No season milestones recorded yet.
Handicap Trend
All Time · 9 matches
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.
Gives 15 more chalks than at the start of this period.
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
| Club | Seasons | Division(s) | P | W | L | Win % |
|---|---|---|---|---|---|---|
| Port Sunlight C | 2026 | Division C | 7 | 0 | 7 | 0% |
| Pt Sunlight Vill & Wks B | 2021 | Division C | 2 | 0 | 2 | 0% |
| Date | Opponent | H/A | Score | Result | Margin | Competition | Division |
|---|---|---|---|---|---|---|---|
| 8/6/2026 | Joy Rynkiewicz | H | 15-21 | LOSS | -6 | League | Division C |
| 8/4/2026 | Graham Benson | H | 19-21 | LOSS | -2 | League | Division C |
| 7/28/2026 | Rod White | A | 2-21 | LOSS | -19 | League | Division C |
| 7/16/2026 | Mark Jones | A | 10-21 | LOSS | -11 | League | Division C |
| 6/24/2026 | Joe Rice | H | 10-21 | LOSS | -11 | League | Division C |
| 6/16/2026 | Andrew Dobson | A | 6-21 | LOSS | -15 | League | Division C |
| 6/9/2026 | Helen Boniface | A | 4-21 | LOSS | -17 | League | Division C |
| 7/29/2021 | John Henshall | A | 4-21 | LOSS | -17 | League | Division C |
| 6/24/2021 | Robert Kell | H | 12-21 | LOSS | -9 | League | Division C |
Current Streak
In a slump
Longest Win Run
Career best winning streak
Longest Loss Run
Career worst losing streak
| Opponent | W | L | Total | Win % | Last Met |
|---|---|---|---|---|---|
| Joy Rynkiewicz | 0 | 1 | 1 | 0% | 8/6/2026 |
| Graham Benson | 0 | 1 | 1 | 0% | 8/4/2026 |
| Rod White | 0 | 1 | 1 | 0% | 7/28/2026 |
| Mark Jones | 0 | 1 | 1 | 0% | 7/16/2026 |
| Joe Rice | 0 | 1 | 1 | 0% | 6/24/2026 |
| Andrew Dobson | 0 | 1 | 1 | 0% | 6/16/2026 |
| Helen Boniface | 0 | 1 | 1 | 0% | 6/9/2026 |
| John Henshall | 0 | 1 | 1 | 0% | 7/29/2021 |
| Robert Kell | 0 | 1 | 1 | 0% | 6/24/2021 |
Debut
Jun 24, 2021
Latest
Aug 6, 2026
Seasons Active
2 (5.1 yr span)
Matches / Season
4.5 (9 total)
Seasons