Reynolds, from Marietta, Ga., is ranked No. 283, and came to Australia without even having a spot in the qualifying event, moving up through withdrawals and injuries.
"It still hasn't sunk in," Reynolds. "I imagine I'll wake up tomorrow and feel a little bit different.
"Last night I made a phone call to Qantas, changing my flight until tomorrow. I guess I've got to call back and tell them I need another flight on Sunday or Monday, at least. I'm just ecstatic right now to be in this position and take advantage of how I played today."
Though he prepared by hitting with Andy Roddick, who gave him some pointers on Pavel's game, Reynolds was amazed at having won in straight sets.
"To get the first set was huge for me," Reynolds said. "It gave me confidence that I could compete with him."
If not for a visa problem, Reynolds would have been a few thousands miles away playing a small tournament in Brazil. He was denied a work visa by Brazilian officials, he said, and decided to roll the dice by flying here.