Shepparton's fastest man must have seen a black cat on his way to the famous Adelaide circuit, copping his fair share of bad luck in both races in his first round as part of new team Matt Stone Racing.
The 27-year-old only managed seven laps of Saturday's first race before his day was unceremoniously ended, hit from behind and pushed into a rival and copping steering damage in the process.
He had started the race 19th on the grid, struggling to harness the power of his new beast in his first qualifying session.
Jacobson slept on it and turned up on Sunday keen to make more of an impact, but again could not generate much fire in qualifying, having to settle for 20th on the grid.
But another early incident literally dented his chances of progressing through the field, although that did not mean he could not use the race to tease fans with a little taste of what his Holden will be capable.
Jacobson generated some top-10 race pace and will be keen to use that for championship points as the season progresses, having finished 20th in Sunday's race.
“Tough day in the office after an incident in the early stages of the race, but we had top-six race pace which leaves us with a lot to be positive about ahead of the (Australian Grand Prix),” he wrote on his Instagram.
Jacobson had been the centre of attention during Thursday's practice session, accidentally squeezing rival Lee Holdsworth into a wall as the faster Ford Mustang sped past him down the back straight.
The incident caused the session to be prematurely ended, and Jacobson stuck his hand up and claimed responsibility on the broadcast.
“When you’re in the wrong, you’re in the wrong. I’ll wear it,” the humble superstar said.
“I was going too slow. I had a green set of tyres on, I was doing brake temp, and when I was going to turn three I thought I’d stay to the right.
“It was a clumsy error on my behalf, and I’m sorry to Tickford and their boys. When it’s your fault, it’s your fault.”