They were alongside last year’s runner-up James Morrison, Swede Alex Noren, Dutchman Joost Luiten and Scottish pair George Murray and Richie Ramsay.
It was a wet and windy opening morning and when Larrazábal bogeyed the 432 yard 18th, his ninth, he slipped back alongside Jonzon and Francesco Molinari on two under.
The Italian's brother double-bogeyed the 18th, however, to be one over.
With Larrazábal falling away, it was Molinari coping best with the conditions.
A pitch to six feet at the long fifth helped him to move to three under and one in front of Jonzon. Only nine of the 78 players - half the field had yet to tee off - were under par at that stage.