The dataset used for the calculations for the age-period-cohort model is provided as Additional file [1](#MOESM1){ref-type="media"}.
Authors' contributions {#FPar3}
======================
PD, CC, and JS designed the study and developed the conceptual framework. PD conducted the literature search, extracted and processed the data, and conducted the statistical analysis. PD and CC wrote the first draft of the manuscript. CC, JS, and PB supervised the project. All authors revised the final manuscript. All authors read and approved the final manuscript.
Competing interests {#FPar4}
===================
The authors declare that they have no competing interests.
Ethics approval and consent to participate {#FPar5}
==========================================
As the data are publically available, there was no requirement for ethical approval.
Last updated on.From the section Rugby Union
It has been a bad week for French clubs in Europe
French clubs have suffered a string of heavy defeats, with Paris club Racing Club leading the way on a 1-5 scoreline.
Leinster, Ulster and Stade Francais were all beaten in Europe, losing to Saracens, Glasgow and Clermont.
It was a poor week for French teams on the field with Toulon losing to Harlequins in the English Premiership and Clermont also losing to Clermont.
But which of their clubs have made the biggest impression on the tournament so far?
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