Reid, the club’s top draft pick in 2006 at No.8 overall, will be the eighth Magpie to debut at AFL level in 2007, and replaces the suspended Anthony Rocca.
Reid follows Daniel Nicholls, Shannon Cox, Brad Dick, Alan Toovey, Tyson Goldsack, Danny Stanley and Martin Clarke as debutants this season.
O'Brien, meanwhile, has been included after making a strong recovery from a dislocated shoulder sustained against Melbourne three weeks ago.
During the first half of the season O'Brien emerged as one of the most consistent and versatile defenders in the league. He replaces youngster Danny Stanley, who has been ommitted.
Stanley, Paul Medhurst and Sam Iles are the emergencies.
To read more about Ben Reid and his selection please CLICK HERE.
AFL Premiership Season – Round 13
Collingwood v Hawthorn
Sunday 1 July 5:10PM, Telstra Dome
Collingwood
B: Dane Swan, Shane Wakelin, Nick Maxwell
HB: Heath Shaw, Harry O’Brien, Tyson Goldsack
C: Scott Pendlebury, Paul Licuria, Tarkyn Lockyer
HF: Ben Johnson, Travis Cloke, Alan Didak
F: Dale Thomas, Ben Reid, Josh Fraser
Foll: Guy Richards, Shane O’Bree, Scott Burns
Int: Leon Davis, Brodie Holland, Shannon Cox, Martin Clarke
Emg: Paul Medhurst, Danny Stanley, Sam Iles
In: Ben Reid, Harry O'Brien
Out: Anthony Rocca (suspended - two weeks), Danny Stanley (omitted)
New: Ben Reid, 18, pick No.8 overall in 2006 AFL Draft. Recruited from Murray Bushrangers
