(CNN) William "Rick" Singer, the mastermind of the college admissions scam, approached seven Stanford coaches about potential recruits between 2009 and his arrest in 2019, Stanford University's president said on Wednesday.

There was no evidence that any Stanford Athletics employees — aside from the former sailing coach — agreed to support a Singer client in exchange for a financial consideration, according to President Marc Tessier-Lavigne's summary of an external report by the law firm Simpson Thacher & Bartlett LLP.

The revelation that Singer directly or indirectly approached seven coaches shows that Singer cast a much wider net at Stanford than was previously known. Singer was the mastermind of a nationwide scheme to game the college admissions system by cheating on standardized tests and bribing athletics officials for admission.

In all, 52 parents, coaches and organizers have been charged in relation to the case. Singer pleaded guilty to four charges and will be sentenced at a later date.

Former Stanford sailing coach John Vandemoer was arrested in March and charged with arranging bribes of $110,000 and $160,000 to the sailing program in exchange for designating two applicants as sailing recruits. Vandemoer pleaded guilty to conspiracy to commit racketeering and was sentenced to two years supervised release but no prison time.

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