It has been a long and varied journey back to the top of the game for Majchrzak, who estimates he spent “100,000 or 150,000 euros” (£85,000-£130,000) fighting his case.
Once he had served his suspension, he dipped into savings to travel the world trying to rebuild his career.
Relying on wildcards from sympathetic tournament directors, he was invited to play on the lowest rung of the professional ladder in Tunisia and Egypt, then moved on to Rwanda, China and Taiwan for ATP Challenger events.
Lots of victories meant his ranking quickly improved and the hard yards have eventually led to his first direct entry into a Grand Slam main draw since the 2022 US Open.
With his wife Marta by his side at Wimbledon, Majchrzak says the pair are “following our dreams” together.
On Sunday, he will face 17th seed Karen Khachanov for a place in the SW19 quarter-finals – having never previously won a main-draw match here.
Remarkably, Majchrzak also came into the grass-court season on a seven-match losing streak and then drew 2021 finalist Matteo Berretini in the first round.
“Matteo is one of the best grass-court players in the world, so my expectations were not that high,” Majchrzak said.
“If I have to choose a Grand Slam to reach the fourth round – and possibly deeper – it would be here. There is such an aura and magic about Wimbledon.”