10th Place Finish Ratio

until 1966 ACF GP

Include Indy 500 races
Ignore non-championship races
Note: records involving non-championship races may be inaccurate due to incomplete data.

Finishing position:

Pos	Designer	10th Place Finish Ratio	10th Place Finishes	Entries
1	Valerio Colotti	20.00%	1	5
2	Frank Costin	15.38%	2	13
3	Ted Cutting	13.33%	2	15
4	Len Terry	9.84%	6	61
5	Tony Robinson	6.90%	2	29
6	Alf Francis	6.25%	3	48
6	John Heath	6.25%	3	48
8	Wilhelm Hild	5.19%	7	135
9	Hans Mezger	4.95%	5	101
10	Helmut Bott	4.27%	5	117
11	Ernesto Maserati	4.12%	12	291
12	Colin Chapman	3.55%	35	986
13	Bindo Maserati	3.45%	1	29
13	Ettore Maserati	3.45%	1	29
15	Geoffrey Taylor	3.33%	2	60
16	Eddie Strait	3.17%	2	63
17	Eric Broadley	3.12%	1	32
18	Mike Oliver	3.05%	8	262
18	Rodney Clarke	3.05%	8	262
20	Owen Maddock	2.85%	31	1086
21	Gioacchino Colombo	2.48%	18	726
22	Tony Rudd	2.36%	5	212
23	Antonio Lago	2.35%	7	298
23	Carlo Marchetti	2.35%	7	298
25	Vittorio Bellentani	2.09%	13	621
26	Am�d�e Gordini	1.81%	7	386
27	Ron Tauranac	1.68%	4	238
28	Vittorio Jano	1.51%	4	265
29	Mauro Forghieri	1.25%	1	80
30	Ernst Loof	1.20%	1	83
31	Carlo Chiti	1.16%	2	173
32	Aurelio Lampredi	1.14%	5	440
33	Reid Railton	0.96%	2	209
34	Alberto Massimino	0.65%	1	153

Finishing position: