‘Coach Al Groh of the Jets expressed concern about the play of his safeties last week, and today he made a change in his lineup by giving Scott Frost, a former quarterback, his first start at safety after a three- year conversion process. Frost took over for Kevin Williams, who had won the job after a three-way competition in training camp. But Williams struggled in the regular season and was dropped to third in the rotation today, behind Chris Hayes. The switch did not solve the Jets’ problems in the secondary. Frost and Marcus Coleman were defending Bills receiver Eric Moulds when he split them and caught a 52-yard pass down the left side. Coleman said both he and Frost were at fault. That led to a field goal that put the Bills ahead by 20-17 in the fourth quarter.’