As a quarterback for the Hurricanes, Torretta spent his first two seasons mostly on the bench behind then starting quarterback Craig Erickson, with his only significant playing time coming with three starts in 1989 after Erickson injured his throwing hand. During that span, however, the then-unknown Torretta lit up San Diego State for 485 yards, setting a school record for most passing yards in a game that was only broken on September 29, 2012 by Stephen Morris.
In his first year as a starter, Torretta garnered further attention by stealing the show in a nationally televised 1991 game versus the Houston Cougars and their Heisman-frontrunning quarterback, David Klingler. As Miami's defense cut down Houston's run-and-shoot offense, Torretta put on the performance that many expected out of Klingler en route to a 40–10 victory; Klingler's lone touchdown pass in the game came with three seconds left in the fourth quarter against Miami's third-string defense, long after the game was decided. Torretta went on to lead Miami to a fourth-quarter comeback win on the road versus #1 Florida State and ultimately to an undefeated season and a co-national championship.
Despite his collegiate-level success, Torretta was not a top NFL draft pick, and his NFL career was fairly unremarkable. He was not selected until the Minnesota Vikings took him in the seventh round in the 1993 NFL draft and then did not play him at all that year. In 1994, Torretta was on the Vikings' roster, and then was picked up by the Detroit Lions. As was the case in 1993, he failed to play at all in 1994, serving the entire season in a backup role with the Lions.
In 1995, Torretta moved to NFL Europe and was also on the roster for the San Francisco 49ers and Detroit Lions but was again relegated to backup roles. He was cut by the 49ers in 1996 and subsequently picked up by the Seattle Seahawks. His only chance to play in an NFL game came in the 1996 season finale when he came off the bench for the Seahawks against the Oakland Raiders. He immediately threw a 32-yard touchdown pass to Joey Galloway that put Seattle ahead, leading the team to victory.
In 1997, Torretta was on the roster for Seattle and later the Indianapolis Colts but again did not play. After the 1997 season, he retired from the NFL.