The Indianapolis Colts likely will sign kicker Martin Gramatica for Sunday's game against Jacksonville as a possible replacement for Adam Vinatieri, who is nursing a groin injury and has not practiced all week. Gramatica tried out with the Colts on Wednesday. Although he was not signed after the workout, coach Tony Dungy said Friday the team was leaning toward signing Gramatica, at least for kickoffs. "He may do everything," Dungy said.