Usami made club history by making his professional debut for Gamba Osaka at the age of 17 years and 14 days and scoring a goal in the same match to become the youngest player to achieve both feats for the club, breaking the records previously set by Junichi Inamoto.
In June 2011, it was confirmed that Usami would be loaned out to Bayern Munich,[REF] with an option to buy next summer.