Andrade had the low round of the day, capping it with a 20-foot birdie putt on 18. Funk shot a 67.
The 50-year-old Andrade is playing in just his fourth Champions Tour event. His best finish was eighth place at the ACE Group Classic in February.
Fred Couples started the day with a two-stroke lead, but fell into a tie for second place after shooting a 71. Jay Haas and Jeff Maggert both had 69 to join Couples one stroke behind the leaders.
Andrade and Funk are at 8-under 136 for the tournament.
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