Tracy rushed six times for 26 yards, caught all three of his targets for 22 yards and lost a fumble in Saturday's 26-3 preseason win over the Dolphins.
Singletary rushed eight times for 40 yards and a touchdown while catching his only target for four yards in Saturday's 26-3 preseason win over the Dolphins.
Head coach John Harbaugh said that Nabers (knee) won't participate in the Giants' joint practices with the Dolphins this week, Jordan Raanan of ESPN.com reports.
Giants head coach John Harbaugh said after Tuesday's practice that Nabers (knee) will need to take contact before getting cleared to play Week 1 against the Cowboys, Ryan Dunleavy of the New York Post reports. "He won't go through the rest of the summer in a red [no-contact] jersey," Harbaugh said. "He's going to have to get bumped around and hit and fronted up. You just have to feel that and know how to deal with it to protect yourself."
Singletary could face an uphill battle to make the Giants' Week 1 roster after the team signed Najee Harris on Tuesday, as reported by Mike Garafolo of NFL Network.