Chelsea remain in third place after Saturday's 2-2 draw against Wolves, but the Blues are now just four points ahead of Arsenal in the Premier League and the Gunners could close that gap to one on Sunday.
Romelu Lukaku scored twice for Thomas Tuchel's side in the second half and the Blues looked on course for victory, but the European champions were pegged back by late goals from Francisco Trincao and Conor Coady.
That meant two dropped points and if Arsenal beat struggling Leeds United at the Emirates Stadium on Sunday, the Gunners will be just one behind their London rivals with three rounds remaining in the Premier League.
Chelsea are away to Leeds next, with home games against Leicester and Watford after their FA Cup final appearance against Liverpool.
Arsenal, meanwhile, are at home to Leeds before a crucial clash away at Tottenham on May 12th. The Gunners (with an inferior goal difference to both of their London rivals) then visit Newcastle and face Everton at home on the final day of the season.
For their part, Spurs (currently two points behind Arsenal and five back from Chelsea) travel to Liverpool this evening, ahead of the north London derby at home, the visit of Burnley at the Tottenham Hotspur Stadium and a trip to relegated Norwich on the final day.
