[1] This was the 4th season in MLS for the Philadelphia and the first full year under manager John Hackworth.

[2] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

The Union have chosen to affiliate with the USL-Pro's Harrisburg City Islanders and as such, will not field a reserve team this season.

Each club in Major League Soccer is allocated eight international roster spots per season.