Verified from 20 cited sources and the canonical match record.
FA Cup replay
Pre-match Elo1567 → 1584(+17)
Manchester United 51%49% Watford
Manchester United went in as the favourite by rating, 1567 to Watford’s 1497.
MUFCInfo goal minutes
Datareference
attendance:supporting, notes:supporting, result, starting-lineup, united-scorers
MUFCInfo match lineups
Datareference
attendance:supporting, notes:supporting, result, starting-lineup, united-scorers
attendance:supporting, notes:supporting, result, starting-lineup, united-scorers
engsoccerdata
Datadataset
attendance:supporting, notes:supporting, result, starting-lineup, united-scorers