Martin starts for the 21s alongside Ryan Haynes and Conor Thomas...Coventry City defender Aaron Martin starts for the Sky Blues Under-21s today.
The defender hasn't had any match action since the Rochdale game in the Capital One Cup so he'll be gaining some valuable match minutes.
Conor Thomas also starts for the Sky Blues alongside Ryan Haynes.
Coventry City: Addai, Di Kelly-Evans, Martin, Harries, Haynes, Shipley, Thomas, Stevenson, Finch, Dev.Kelly-Evans, Sambou.
Subs: Ford, Hickman, Leahy, Maycock.
Crewe Alexandra: Richards, Baillie, Kearns, Howell, Davis, Guthrie, O'Neill, Wintle, Dalla Valle, Cooper, Brown.
Subs: Mullarkey, Harrison, Ainley, Lowery.