Chris Knights and David Mackay are in line to play their first games of 2011.

They have been named in a 29-man squad to prepare to play Fremantle in a NAB Challenge game at Thebarton Oval on Saturday.

Knights missed the opening rounds of the NAB Cup to rest a corked thigh and Mackay has been cleared to play after recovering from groin surgery.

The 29-man squad is: Tambling, Reilly, Tippett, S. Thompson, Gunston, Cook, Sloane, Jaensch, Doughty, Talia, Walker, Mackay, Symes, Davis, Johncock, Maric, Knights, Otten, Petrenko, L. Thompson, Sellar, Dangerfield, Smith, McKernan, Martin, Callinan, Porplyzia, Henderson, Wright.