  While PageRank has been extensively used to rank sport tournament
participants (teams or individuals), its superiority over simpler ranking
methods has been never clearly demonstrated. We use sports results from 18
major leagues to calibrate a state-of-art model for synthetic sports results.
Model data are then used to assess the ranking performance of PageRank in a
controlled setting. We find that PageRank outperforms the benchmark ranking by
the number of wins only when a small fraction of all games have been played.
Increased randomness in the data, such as intrinsic randomness of outcomes or
advantage of home teams, further reduces the range of PageRank's superiority.
We propose a new PageRank variant which outperforms PageRank in all evaluated
settings, yet shares its sensitivity to increased randomness in the data. Our
main findings are confirmed by evaluating the ranking algorithms on real data.
Our work demonstrates the danger of using novel metrics and algorithms without
considering their limits of applicability.

Social and Information Networks;Information Retrieval;Physics and Society