The first players to tee off were on the course for a little more than 2 1/2 hours before the horn sounded to suspend play.
The tandem of Joel Dahmen and Brandon Harkins left the course with the lead at 6 under through nine holes at the par-72 TPC Louisiana course southwest of New Orleans.
One group played as many as 10 holes before play was stopped. Play resumed in the evening with just more than two hours of daylight left.
As the only team event on the PGA Tour, the Zurich Classic field is comprised of 80 two-player teams that play a best-ball format in the first and third rounds and alternate shot in the second and final rounds.
More AP golf: https://apnews.com/apf-Golf and https://twitter.com/AP_Sports
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.