McIlroy had six birdies and three bogeys on the Severiano Ballesteros course in the Swiss Alps in his first competitive round at the Crans-sur-Sierre club since 2011. Schwab, a 24-year-old Austrian, had a bogey-free 63 in the morning and was joined in the afternoon by Lorenzo-Vera. The 100th-ranked Frenchman had been 1 over after six holes.
One shot back on 6 under were Mikko Korhonen, Sebastian Soderberg and Lorenzo Gagli. Tommy Fleetwood, who also came to Switzerland direct from the Tour Championship in Atlanta won by McIlroy, was in a six-man group on 65.
McIlroy's playing partner Lee Westwood, Luke Donald and Miguel Ángel Jiménez were among former European Masters winners on 3 under.
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