From the left wing, Davies found Jonathan David who laid the ball to fellow striker — and no relation — Promise David, but his shot went wide.
Moments later Davies found Jonathan David again. This time he shot from a tight angle, but was denied by Williams.
In the second minute of stoppage time, Canada finally broke through, from the other flank.
Jacob Shaffelburg raced down the right wing and pinged in a cross which was headed clear to Eustaquio.
The Porto midfielder — on loan at Los Angeles FC — chested the ball down and slammed it first-time into the bottom-left corner.
Canada’s bench streamed onto the pitch as the stadium erupted, celebrating a historic victory.