Curtin played in 28 games with 17 starts in three years with Notre Dame, mainly at right tackle.
Rubin was the second of four selections in the seventh round of this year's draft, a compensatory pick. He will try to make the roster as the Packers' fifth wide receiver and kick return specialist. At the University of South Florida, Rubin played in 42 career games and gained 1,534 yards and one touchdown on 60 kick returns. He had 64 punt returns for 1,049 yards and 4 touchdowns. He also caught 91 passes for 1,306 yards and 14 touchdowns.
Rubin injured his hamstring in late May during a team "opportunity session" and missed the first week of practices in the June minicamp. He returned this week, but was limited.
Coach and general manager Mike Sherman indicated last week that the team probably will not sign Barnett, taken with the 29th overall pick, until other first-round picks begin to sign.