Barny,

I've had a look at the pertinent article, and like you I can't understand how the total strike rate comes to 74.9% and not 100%. Even dead-heats would have to be shown in the results.

However, there must be more to it because it would be difficult to accept that such a basic error could be made, especially when a massive 25.1% of races is not accounted for.

Maybe a clarification will be made in their next edition.