Stewart Cink leads Nicolas Colsaerts at halfway stage after second round 63 . Playing partner Tiger Woods could only manage a one -under par round of 71 . First round leader Jordan Spieth now First after also shooting a one on Friday .
Jordan Spieth leads Farmers Insurance Open at halfway stage after second round 63 . Playing partner Tiger Woods could only manage a one-under par round of 71 . First round leader Stewart Cink now second after also shooting a 71 on Friday .