Lewis played the Magnolia Course, one of two being used at the Walt Disney World Resort in this pro-am event. The field will play one round at the Magnolia and another at the Palm Course before the final two rounds are held at the Magnolia.
Vijay Singh, seeking his ninth win of the year and who hopes to become the first player to earn $10 million in a single season, shot a 66.
"I played well and I putted really well, so I'm pretty happy," Lewis said. "This year has been kind of an off year, and I've just been working on executing shots and trying to just get more proficient. Hopefully it's paying off."