Two months later , Sanchez gave the Gunners the lead against Palace .
Gunners failed to press home Gunners ' advantage , despite 72 % possession and 21 shots , and drew 1 - 1 .
Two months later , Sanchez gave the Gunners the lead against Palace but they failed to press home their advantage , despite 72 % possession and 21 shots , and drew 1 - 1 .