Rory McIlroy's Masters lead vanishes

McIlroy's struggles were most apparent at the treacherous Amen Corner, where he dropped three shots in a damaging 45-minute stretch.

Meanwhile, Cameron Young surged into contention with a career-low 65, setting up a high-stakes showdown for the green jacket.

Other contenders, including Shane Lowry and Scottie Scheffler, remain within striking distance after a day of low scoring across the field.

The stage is set for a dramatic Sunday as McIlroy attempts to become one of the few players to achieve back-to-back Masters victories.