Beitia ranks first in the overall standings of the League, while Vlasic is third.
Croatia's Sandra Perkovic won the discus throw event at the New York meeting, and her victorious throw of 68.44 metres enabled this Croatian Olympic Games Gold medallist and world champion to ensure the overall victory in this season's Diamond League with three more meetings remaining.
The second best throw was made by Cuban Jaimi Perez (65.86), and she was followed by French Melina Robert-Michon (62.77).