Colorado Buffaloes' linebacker Douglas Rippy will enter the NFL draft this season after a disappointing senior year in Boulder, but the disappointment may continue.

NFL teams started paying more attention to Rippy after a strong sophomore season. After his junior season was cut short with a knee injury, many had hope for the linebacker's senior campaign. Rippy, however, failed to bounce back.

Rippy has had issues with his right knee, including the torn ligament that ended his junior year after seven games. But he has also battled left knee issues which have greatly limited his effectiveness.

Tony Pauline of Sports Illustrated wrote an article listing the players that helped themselves the most in college football this season, as well as the players that hurt their draft stock the most. Pauline listed Rippy under the fallers, writing:

He was graded as a third-round choice prior to the season, but Rippy could go unselected due to medical red-flags.

Even if Rippy does not get drafted, he will likely receive an invite to an NFL camp to prove he can stay healthy.