Liverpool captain Jordan Henderson admits Virgil van Dijk is proving the difference in their title race this season.
During yesterday night's game against Wolverhampton, Virgil van Dijk scored second goal in a 2-0 win.
"I think the biggest difference [to 13/14] is the clean sheets. Back then we were conceding too many goals. We need to continue on that," said Henderson.
"I just feel we are defending really well as a team. Virgil [van Dijk] and Alisson have made a big difference but the whole team have been important."
Liverpool now are 4 points ahead from the 2nd places Manchester City, who have played a game less and with the win over Wolves, the Reds made their unbeaten run up to 18 games in the Premier League.