Jacob Skov Olesen and Haotong Li held the early Thursday lead at 4 under while Mickelson, 55, had his lowest opening round in an Open since 2016.

The British Open is live Thursday at Royal Portrush with Scottie Scheffler just off the lead after 3-under 68. Follow the scores, updates, highlights.

Traditionally, the cut line keeps the best 65-70 players - and anyone tied with those at the bottom of that list - in the ...

And this year, it's being played outside Great Britain for only the third time in the event's 153-year history.