In what could be a thriller between two of the most in-form teams in English football, Portsmouth's class and higher-level experience may just get them over the line.
Chesterfield have been near-faultless in the National League though, and they will be tricky customers for Mousinho's side, despite being two divisions below their upcoming opponents.
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Data Analysis
Our analysis of all available data, including recent performances and player stats up until an hour before kickoff, suggested the most likely outcome of this match was a Portsmouth win with a probability of 47.84%. A win for Chesterfield had a probability of 27.83% and a draw had a probability of 24.3%.
The most likely scoreline for a Portsmouth win was 0-1 with a probability of 9.55%. The next most likely scorelines for that outcome were 1-2 (9.45%) and 0-2 (7.87%). The likeliest Chesterfield win was 1-0 (6.95%), while for a drawn scoreline it was 1-1 (11.45%). The actual scoreline of 1-0 was predicted with a 7% likelihood.