(Photo taken from the official site)
Both Carlsen and Aronian won their games, so there is just 1 point difference between them!
Results of the 4th round
Carlsen 5 1-0 3 Caruana
Aronian 4 1-0 3 Nakamura
Gelfand 2 0-1 1 Anand
Standings after 4 rounds
Carlsen 7
Aronian 6
Nakamura 3
Caruana 3
Anand 3
Gelfand 2
Pairings of the 5th round
Nakamura – Gelfand
Caruana – Aronian
Anand – Carlsen