Alex Rodriguez admitted Monday that he used performance-enhancing drugs from 2001-03, saying he did so because of the pressures of being baseball’s highest-paid player.

“When I arrived in Texas in 2001, I felt an enormous amount of pressure. I felt like I had all the weight of the world on top of me and I needed to perform, and perform at a high level every day,” the New York Yankees star said in an interview with ESPN that was broadcast Monday shortly after it was recorded.

His admission came two days after Sports Illustrated reported he tested positive for steroids in 2003, one of 104 players who tested positive during baseball’s survey testing, which wasn’t subject to discipline and was supposed to remain anonymous.

“And I did take a banned substance and, you know, for that I’m very sorry and deeply regretful. And although it was the culture back then and Major League Baseball overall was very — I just feel that — You know, I’m just sorry. I’m sorry for that time. I’m sorry to fans. I’m sorry for my fans in Texas. It wasn’t until then that I ever thought about substance of any kind, and since then I’ve proved to myself and to everyone that I don’t need any of that.”