Japan's Hideki Matsuyama produced a brilliant 65 to open up a four-shot lead after the weather-affected third round of the 85th Masters.
Following a 78-minute delay due to a thunderstorm, Matsuyama fired an eagle and four birdies to cover the back nine at Augusta National in just 30 shots and take a massive step towards his first major title.
The first bogey-free round of the week left Matsuyama on 11 under par, with halfway leader Justin Rose, Xander Schauffele, Marc Leishman and Will Zalatoris all on seven under.
"I'm happy enough," MacIntyre said. "I made a crazy mistake on the par-five 13th (three-putting for a bogey) but other than that I played solid stuff.
"It was tough early on, the wind started getting up and I was stood on the 14th tee and there was stuff falling off the trees on me. But once the storm came through it calmed it down and you could get at it.
"I'm not here just to make up the numbers. I'm here because I got here on merit, and I'm here to win a golf tournament. If I wasn't trying to win this golf tournament, I'd be sitting at home with my feet up watching it.
"I've prepared for the last year; my goal was top 50 in order to get in this golf tournament because I love watching it so much. I'm here now, and I'm trying to win it."
