The 59-year-old Haas, the winner of the major championship in 2006 and 2008, had a bogey-free round. The 50-year-old Waldorf had six birdies and one bogey.
Haas has 16 Champions Tour victories after winning nine times on the PGA Tour. Waldorf is winless in 11 career starts on the 50-and-over tour after winning four times on the PGA Tour.
EUROPEAN TOUR: In Virginia Water, England, James Kingston shot 6-under-par 66 at Wentworth to take the lead during the suspended first round of the BMW PGA Championship.
Afternoon play was delayed for about 90 minutes because of the threat of lightning and five groups were still on the course when the round was suspended for the day because of darkness.
Sergio Garcia opened with 72. Second-ranked Rory McIlroy bogeyed five of the last six holes for 74, and playing partner Graeme McDowell, coming off a victory Sunday in Bulgaria in the Volvo World Match Play, also had 74.
Ian Poulter finished with 76, and two-time defending champion Luke Donald had 78.
WEB.COM TOUR: In Leon, Mexico, Michael Putnam shot 8-under-par 64 and led by two when play in the Mexico Championship was suspended because of darkness.
LPGA TOUR: In Paradise Island, Bahamas, the LPGA is going to use as much of the flooded Ocean Club course as it can for its inaugural trip to the Bahamas.
The Bahamas LPGA Classic is to start today with a 12-hole round, using the holes that aren’t under water from the worst flooding in about 20 years. Officials hope the rest of the course will drain in time for an 18-hole Sunday.
Otherwise, it would be three rounds of 12 holes for the 144-player field.