18th Place Finish Ratio

until 1984 South African GP

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

Finishing position:

Pos	Designer	18th Place Finish Ratio	18th Place Finishes	Entries
1	Giacomo Caliri	2.86%	1	35
2	Dave Baldwin	1.65%	2	121
3	Frank Costin	1.04%	1	96
4	John Surtees	0.86%	3	347
5	John Baldwin	0.79%	1	126
6	Mike Pilbeam	0.78%	1	128
7	Ken Sears	0.72%	1	139
8	Alberto Massimino	0.65%	1	153
9	Tony Southgate	0.60%	4	671
10	Ralph Bellamy	0.54%	2	369
11	Dave Wass	0.53%	2	380
12	Owen Maddock	0.45%	5	1106
13	Geoff Ferris	0.45%	1	222
14	Robin Herd	0.42%	3	715
15	Mike Oliver	0.38%	1	262
15	Rodney Clarke	0.38%	1	262
17	Derek Gardner	0.37%	1	269
18	Harvey Postlethwaite	0.35%	1	289
19	Mauro Forghieri	0.34%	2	582
20	Ernesto Maserati	0.34%	1	294
21	Vittorio Bellentani	0.32%	2	621
22	Maurice Philippe	0.17%	1	600
23	Ron Tauranac	0.15%	1	672
24	Gioacchino Colombo	0.14%	1	726
25	Colin Chapman	0.11%	2	1848

Finishing position: