A pair of early second half ejections doomed Boston City in their 2-0 loss to New York Athletic Club.
Femi Hollinger-Janzen scored late to send the Revs to a 2-1 comeback win over Seattle.
A Kyle Tomas red card allowed the Phoenix to overtake a shorthanded Pioneers, who fell 2-1.
Southie FC overcame two deficits to get a 4-3 comeback win days after their Open Cup dreams were dashed.
The Pioneers opened their home slate with a win not long after unveiling a larger than life statue of Eusebio at Lusitano Stadium.
Whitney Engen snapped a 468-minute goal drought for Boston, who clinched win no. 1 on Sunday.
Paul Arriola scored and assisted in his international debut to help the U.S. beat Puerto Rico 3-1 on Sunday.
After a lively first half, the Revs offense went silent as Dallas pulled ahead to send the hosts to a 4-2 loss.