Newcastle United and Crewe Alexandra both picked up wins in pre-season, while Millwall played out a tough stalemate.
Demba Ba grabbed the only goal of the game as Newcastle earned a 1-0 friendly win over Monaco in Germany.
The Senegal international, who was his club's leading goalscorer last season, nodded home from close range in the 33rd minute to capitalise on hesitation in the French side's defence.
Millwall opened their pre-season with a 0-0 draw against Irish Premier League side Shelbourne in Dublin, where Lions boss Kenny Jackett offered new signing Karleigh Osbourne an outing.
Crewe beat Quorn 3-0 with goals from new-boy Mathias Pogba, the brother of former Manchester United midfielder Paul, and youngsters Brendan Daniels and Harry Clayton doing the damage.