The American turned up at Augusta National in November for the rescheduled 2020 edition believing he could overpower the Georgia course, saying the par for him was 67 as opposed to 72.
He fell flat on his face after never really recovering from a shaky start and ended up 18 shots behind the winner, fellow American Dustin Johnson.
DeChambeau was nowhere near as bullish in his press conference for this week’s event, but, at the same time, said he is determined to slip into a Green Jacket one day.
“I'm still going down numerous rabbit holes, and I will never stop, not only to win golf tournaments but to definitely win this tournament,” he declared. “I mean, this has been on my radar since I was a kid, and now that I've accomplished winning the US Open, this is the next goal for me.
“And I will not stop my pursuit of knowledge of the game, knowledge of the body, knowledge of the golf swing to give myself the best opportunity to win. At the end of the day, it comes down to execution. You have to be able to go out there and hit a great shot and execute when the pressure comes around.
“I can give myself the most advantages all day long, but, if I don't go out there and just execute, it doesn't really mean much.”
DeChambeau had been tinkering with a 48-inch driver heading into last year’s event before deciding using that in the heat of battle. He seems to have something new up his sleeve for this week, but it is keeping it under wraps.
“There's something in the bag this week that's very helpful,” he said. “I won't go into the specifics of it. But just know this has been a few years in the making, and I'm very excited for it. Whether it helps me perform at a higher level, I'm not sure, because it's golf and you never know what happens.
“Definitely what I've seen on the driving range and what I've seen the last week in practice, there's some tremendous benefits to it.”
The Californian claimed his sluggish effort in November had partly been caused by health issues, but he is feeling tickety-boo this time time around.
“It's a lot better, way better,” he said. “There were some interesting things that went on. Took about four or five months to figure out what it was. We went through CT scans, X-rays, cardioid measurement. We had ultrasound on my heart. We had measurement of the blood vessels on my neck.
“You name it, we did it, sinus, CT scan measurements, infection checks and everything. And we couldn't find anything. There was literally nothing.
“Then one day I was talking with Neuropeak, and we went over a couple things with the brain. Obviously the brain was stressed still and wasn't feeling that great. And they were like, well, let's check out your oxygen levels.
“There was something there and immediately from after changing the way I was breathing, it literally just went away. Ever since then, I've been okay.”