Boyd, a 1,000-yard receiver in each of his first two seasons at Pitt, was charged with DUI in June. The All-Atlantic Coast Conference first-team selection was pulled over in June south of Pittsburgh. Boyd told police he had two shots of alcohol.
Blair, who led the Panthers with 5.5 sacks in 2014, was charged with driving under the influence of a drug after he was clocked at 117 mph in March.
Narduzzi said the players will be subject to additional internal discipline. The first-year coach said the situations are ''very disappointing'' and that both players expressed remorse.