Immelman sought PGA Tour explanation for Oosthuizen's Presidents Cup ban

Oosthuizen, who has played in the last four editions of the Presidents Cup, had hoped that by resigning from the PGA Tour, which runs the Presidents Cup, he would remain eligible for the matchplay event at Quail Hollow Club.

The PGA Tour has suspended members who competed in LIV Golf events from playing on the US-based circuit and said anyone else who makes the jump will face the same fate.

But since there is no rule that says a golfer must be a member of the PGA Tour to be on the International team at the matchplay event, Immelman, whose team has been hit hard by LIV Golf defectors, sought an explanation about Oosthuizen.

"My understanding is that he made particular announcements and allowed himself to be used in different marketing campaigns and announcements once he was not given the release from the PGA Tour," Immelman told reporters at Quail Hollow Club.

"And he did all of those things before he resigned his membership. So there were still particular infractions there."

Reuters has contacted Oosthuizen's representatives for comment.

While Immelman admitted he was disappointed to have lost key players due to their desire to join LIV Golf, he said he was not blindsided by their moves and that they kept him in the loop throughout their decision-making process.

"Every single player that I spoke to from early on in this process knew exactly what the situation and the consequences were going to be," said Immelman.

"And they knew that if they made certain decisions, it was going to be highly unlikely they were going to be able to represent the international team.

"So that went into their decision-making process. All the cards were out on the table, and everybody knew where they stood."