Description:Juan Roman Riquelme's return for Boca Juniors amid joyous celebrations at La Bombonera turned to disappointment after a shock 3-1 defeat by relegation candidates Union on Sunday (March 3). Union, the team against whom the 34-year-old Riquelme made his Boca debut 17 years ago, ended a run of 26 Argentine league matches without tasting victory in the most unlikely of places.(2:00)