Mo Vaughn, 12-year MLB veteran, admits using HGH to extend career

"I was trying to do everything I could," Vaughn explained. "I knew I had a bad, degenerative knee. I was shooting HGH in my knee. Whatever I could do to help the process."

Vaughn was among players named in the infamous Mitchell Report, which dove into the use of steroids and performance-enhancing drugs in baseball in 2007. 

In Vaughn's case, the report found evidence that he had purchased, on three separate occasions, HGH in 2001 - a year he didn't play after injuring his left ankle and knee chasing a foul ball. 

The next season, Vaughn hit a career-high 44 big flies with 143 RBI, while hitting .326/.420/.583 with a 1.003 OPS. 

After eight years with the Red Sox, where he hit 230 of his 328 career homers, Vaughn spent two seasons with the Los Angeles Angels from 1999-2000 before that injury in 2001 that wiped him out for the entire year. 

Vaughn joined the Mets in 2002, playing 139 games while hitting 26 homers with 72 RBI with a .259 batting average. 

Vaughn made three All-Star teams during his career (1995, 1996, 1998), all with the Red Sox.