Lowry began a shot off the lead but a dire six-over round of 76 means he is set to miss the cut.

The defending champion had been among a seven-way tie for the lead.

The Northern Irishman, bidding to win back-to-back majors and a seventh overall, finished his round with four successive bogeys.

Rory McIlroy tees off at 1.40pm BST.

The Sheffield siblings are two of golf’s most in-form players.

Luke Donald’s team gained half a point before play had even started as Viktor Hovland withdrew through injury and his game was declared a draw.