Nicolas Pepe was sent off but Bernd Leno frustrated wasteful Leeds United with a string of fine saves as Arsenal ground out a goalless Premier League draw at Elland Road.
Pepe, who struck the crossbar in th first half, was shown a red card for headbutting Ezgjan Alioski early in the second half on a dismal Sunday afternoon in West Yorkshire.
Toothless Leeds were the better side before Pepe's dismissal but they were unable to claim a first win over the Gunners since 2003, with Leno outstanding and Rodrigo and Patrick Bamford and Raphinha all striking the woodwork.