Aeroflot Open, Round 7: Eljanov beat Korobov, Caruana blundered!

Round 7 of Aeroflot Open brought some new interesting and surprising results. An over-night tournament leader, Anton Korobov (2660) lost to his fellow countryman, GM Pavel Eljanov (2690), after an interesting battle in Slav Defence. 
A big surprise is defeat of Fabiano Caruana (2736). He lost to Polish grandmaster Mateuzs Bartel (2658) in Slav Defence when he simply blundered in worse position.
Let's have a look on these two games:

And here is the game Bartel v Caruana:

Mateuzs and Eljanov are the only players who have achieved 5.5/7 which put them on the top of the leaderboard.

Mateusz Bartel	5.5/7	(+4 -0 =3)
Pavel Eljanov	5.5/7	(+4 -0 =3)
Hrant Melkumyan	5/7	(+5 -2 =0)
Viorel Iordachescu	5/7	(+3 -0 =4)
Anton Korobov	5/7	(+4 -1 =2)
Ivan Sokolov	4.5/7	(+2 -0 =5)
Fabiano Caruana	4.5/7	(+4 -2 =1)
Dmitry Andreikin	4.5/7	(+2 -0 =5)
Evgeny Tomashevsky	4.5/7	(+2 -0 =5)
Maxim Rodshtein	4.5/7	(+3 -1 =3)
Alexander Khalifman	4.5/7	(+2 -0 =5)
Vladimir Fedoseev	4.5/7	(+3 -1 =3)
Bartosz Socko	4.5/7	(+2 -0 =5)
Bu Xiangzhi	4.5/7	(+2 -0 =5)
Evgeny Alekseev	4.5/7	(+2 -0 =5)
Sergei Zhigalko	4.5/7	(+3 -1 =3)
Ivan Popov	4.5/7	(+4 -2 =1)
Baadur Jobava	4.5/7	(+3 -1 =3)
Eltaj Safarli	4.5/7	(+2 -0 =5)