His misery was compounded when he was forced to withdraw from the 150th Open Championship at St. Andrews during his Wednesday practice round.
That was after he showed off his hilarious approach to the Home of Golf's famously tricky bunkers.
Rose, now 42 years old, carded an opening round of 3-under 67 at Memorial Park Golf Course on Thursday to trail the early leaders by two strokes.
The Englishman said he has spent the last couple of months at home just trying to get his body feeling good again.
He told the media:
"Yeah, I think I'm trying to look at this as 2023 already, do you know what I mean? Yeah. So obviously the end of 2022, it's been a year to forget really for the most part, but I've had six or seven weeks back at home just trying to get 100 percent feeling good with my body.
"So that's been the positive of the last couple weeks is I'm feeling good. I'm able to go out there, do my job, practice a little bit, sink my teeth into it, which is great. But getting to sort of with that trend.
"So hopefully -- last week [I] missed the cut, but there was some signs and then obviously a stronger start this week. So hopefully I can kind of grow into these last three events of the season and then really build again into 2023 as a calendar year."
Rose missed the cut at the World Wide Technology Championship at Mayakoba that was won by Russell Henley.
Eagle-eyed viewers might have noticed that he also switched up his putting technique.
"[My] left hand is still the same, but the claw has disappeared. I felt like with the claw I was just struggling with the shape of my backswing. I was getting a little too linear in the backswing, a little too straight back.
"I just felt like the way my right hand was it was guiding me straight down the line.
"And I felt like when I put my right hand in just close to my left hand, I felt like it makes me symmetrical in the forearms, and the sweetspot works up the plane a bit easier in the backswing. First time in competition last week, I felt like I putted pretty good."
"It still doesn't feel conventional to me. Conventional to me is the reverse overlap. I put the left finger down the side of the shaft, so it's almost a two-thumbs style where my thumbs are very close together.
"So I don't regard that as a traditional putting grip. I'm still quite a traditionalist in where the straight up reverse overlap, thin grip, Scotty Cameron style putter; that for me is traditional… but yeah, a slight modification.
"You know, a lot of guys are gripping it like that. Danny Willet has the exact same putting grip. Matt Wallace is quite similar. Matt Fitzpatrick has the exact same grip. It must be an English thing."
