Rock, who needs to finish in the top two to secure his place at Augusta on April 5, remains 11 shots off the pace of leader Price as strong winds delayed play by five-and-a-half hours.
The Englishman was left some way off the leaders on one-over par with Welshman Price leading the way after a second-round 66 took him to 10 under.
But while Rock and Price managed to reach the clubhouse, many of the field at Agadir will have to complete their rounds on Saturday morning.
Former Ryder Cup star Price, who claimed a famous win over Phil Mickelson at The Belfry in 2002, is chasing his first victory in nine years.