In their first warm-up match in the United States, Man City narrowly defeated Philadelphia Union 1–0.
This team was not even considered one of the stronger sides in Major League Soccer. Man City controlled possession throughout the match but simply could not score. Finally, in stoppage time, Adam Johnson crossed the ball, setting up Santa Cruz to score.
Su Dong, Pepe, Marcelo, and the other new signings all stayed on the bench.
In their second warm-up match, Man City faced Portuguese Super League side Sporting Lisbon.
Sporting Lisbon could be considered the former club of Su Dong, Pepe, and Moutinho, but only Moutinho came on as a substitute in the second half.
Man City ultimately lost 0–2 to Sporting Lisbon.
The situation remained the same as before: Man City firmly controlled possession, while Sporting Lisbon scored twice on the counterattack.
If the defeat to Sporting Lisbon in the second match was still barely acceptable, then the 1–2 scoreline against New York Red Bulls in the third match left Man City looking extremely embarrassed.
Henry scored one and assisted another to lead New York Red Bulls to a comeback victory over Man City.
Sánchez scored Man City's goal.
Su Dong still did not appear, leaving many people puzzled.
In the fourth match, Man City traveled to the central United States and faced Club América in Atlanta. The two sides drew 1–1, but Man City won the penalty shootout 5–2.
Su Dong still did not appear in this match.
In other words, Su Dong had not played even a single minute in Man City's four warm-up matches in the United States.
Every other player had already appeared, and some had even started, yet Su Dong alone remained sidelined.
There was no injury and no conflict. Why wasn't he playing?