The Open Championship has instigated a two-tee start for the first time in its history because of the risk of thunderstorms.
Players are using both the first and 10th tee, with the field split into groups of three rather than two.
It's hoped that will mean the round can be completed on schedule even if there are delays due to the weather.
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Windy, with sunny spells and scattered showers, wintry over hills with perhaps hail and thunder at lower levels. Cold overnight