"Our kids would disown us if we ever tried to interfere", tweeted Mickelson on Thursday.
"We along with thousands of other families hired his company to help guide us through the college application process", Mickelson said.
Now it has been disclosed that two more celebrities, Phil Mickelson and Joe Montana, used Singer's company for consulting during the college admission process for their own children BUT the two athletes took to Twitter to swiftly deny any potential wrongdoings.
Hall of Fame quarterback Joe Montana also issued a statement Thursday, saying his family used Singer's company but it was nothing more than for consulting. "Most every family that has used his company are not a part of it".More news: Over $2 million raised in support of Chch attack victims
Mickelson has three children, ages 15 to 19. "So that's why I think we're all surprised".
Earlier this week, federal prosecutors accused multiple coaches and administrators of participating in a wide-ranging fraud scheme in which they accepted bribes to facilitate students' admission into elite universities like USC, Stanford, UCLA, Georgetown and Wake Forest.
Mickelson said Singer's company helped to find the right college for their personalities and to make sure they knew what they needed academically and with test scores to be accepted into the college of their choice. His oldest daughter, Amanda, now attends Brown University.
His daughter attended Pacific Ridge School in San Diego, where she was a co-captain of the tennis team and the school president.More news: Speaker banned from Aust after terror attack comments
Singer pleaded guilty on Tuesday to charges of racketeering, money laundering, obstruction of justice and conspiracy to defraud the United States.
Edge College & Career Network published a testimonial from Mickelson and his wife on its company website.
"Our kids, schools are like fighting to get them", Mickelson said. And I say that as a proud dad. "Their grades and their outside activities, and their worldly views on things have colleges recruiting them". Mickelson said it was a thank you note his wife wrote to Singer for helping them with their children's academic careers.
The PGA legend and five-time major victor claimed his family - "along with thousands of others" - used Singer's college counseling company The Key to help guide them through the admission process.More news: Washington reacts to Afghan NSA Hamdullah Mohib's remarks regarding US-Taliban talks