Strategy

Plans built only from the evidence.

Every line below is a measured split or record from the data, with the sample behind it. Nothing here is a prediction.

JM Holland, Men's Test

Old ball (21-80): strike rate of 157.5, 50.8 above their strike rate of 106.7 on all balls bowled (+48%) — allowing for sample size, that change is in the bottom 7% of comparable players (their median change: +5%) — 630 balls bowled.
Sample: 630 balls · medium confidence
Left-handed batters: economy of 4.33, 0.75 above their economy of 3.59 on all balls bowled (+21%) — allowing for sample size, that change is in the bottom 15% of comparable players (their median change: +1%) — 252 balls bowled.
Sample: 252 balls · low confidence

Right-handed batters: economy of 3.32, 0.27 below their economy of 3.59 on all balls bowled (-7%) — allowing for sample size, that change is in the top 13% of comparable players (their median change: -1%) — 708 balls bowled.
Sample: 708 balls · medium confidence

Batter
Batter	Balls	Runs	Wkts	Avg	Econ	Balls/wkt	Dot %	4s+6s %
Right-handed batters	708	392	6	65.33	3.32	118.0	69.8%	6.4%
Left-handed batters	252	182	3	60.67	4.33	84.0	58.7%	6.3%

Phase
Phase	Balls	Runs	Wkts	Avg	Econ	Balls/wkt	Dot %	4s+6s %
Old ball (21-80)	630	367	4	91.75	3.50	157.5	67.5%	5.7%
Second new ball (81+)	216	134	3	44.67	3.72	72.0	66.2%	7.9%
New ball (1-20)	114	73	2	36.50	3.84	57.0	64.9%	7.0%