Sandhu dropped four bogeys and a double bogey against a lone birdie, while Kapur had five bogeys, two double bogeys and a couple of birdies in his opening round.
The duo will need a very strong second round to stay on for weekend action.
Swede Oscar Lengden leads the way at the end of round one after he signed for a six-under par round of 66 on a day in which the fastest round came in at 55 minutes under the average time across the European Tour in 2018 for 18 holes in three balls.
Five groups completed their rounds in under four hours, as the average for the day came in at four hours and 13 minutes, with no penalties imposed for bad times.
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