Two markedly different performances in each half resulted in a tense, nervy 1-1 draw.
The opening game for Wales and the USA in this World Cup was billed as the possible deciding match in Group B, determining who would likely finish behind England to qualify for the Group of 16.
A 1-1 draw, however, left the group wide open.
The draw means both the USA and Wales will be desperate to make a big impact in their games against Iran, with Wales up first against Team Melli on Friday, while the USA takes on England, with the fixtures reversed the following Tuesday in the final group stage games.
SOURCE: AL JAZEERA