Arsenal were 2-1 winners over Paris St Germain and Valencia beat Inter Milan 2-0 on the first day of the pre-season Emirates Cup tournament on Saturday.
Both games were played at Arsenal's Emirates Stadium where the friendly tournament ends on Sunday with Arsenal playing Inter and Valencia facing PSG.
Valencia got the action underway with a comfortable win over the Italian champions.
Jaime Gavilan opened the scoring, collecting a long ball forward and beating Inter keeper Francesco Toldo from a tight angle. Striker David Villa made it 2-0 before the break with a deflected free kick.
Arsenal's French midfielder Mathieu Flamini put the hosts ahead on the stroke of halftime in the day's second game, with his first-time shot flashing in off the post.
Danish forward Nicklas Bendtner poked home their second in a goalmouth melee in the 70th minute and Peguy Luyindula got PSG's consolation goal 10 minutes from time. Bendtner then missed a late penalty.