The VAR system was being given its second outing in English football and was called into action in the first half to confirm Atkinson's decision to wave away a penalty appeal after Arsenal's Alex Iwobi went down following a challenge from Victor Moses. It was called on again with two minutes remaining and once more confirmed the referee's decision not to award a penalty, this time after Danny Welbeck got a faint touch on the ball when bringing down Fabregas. With the system still in the test phase all eyes were focused on how it would work, with Wenger voicing concerns in the aftermath about the length of time it took to confirm the referee's decision not to award a penalty against Welbeck. He was, however, delighted with how his side defended to leave the tie in the balance ahead of the second leg in two weeks time.FT: Chelsea 0-0 Arsenal. The second successful 0-0 for the Blues who's finishing was poor again today, not only that the quality of chances wasn't great. Chelsea dominated but didn't get the win they would have needed. #CFC #CHEARS
— Nizaar Kinsella (@NizaarKinsella) January 10, 2018
Arsenal came into the game without a win in their last three matches and nursing the wounds of a bruising third round FA Cup defeat to second tier Nottingham Forest, but they were resolute from the beginning in what was a relatively cagey affair. Headed chances went begging for the host either side of halftime as Fabregas could only steer Cesar Azpilicueta's diagonal ball straight at David Ospina while Christensen twice failed to find the net from close range after the break. The winner will face either Manchester City or second tier Bristol City in the final, with the Premier League leader taking a 2-1 lead into the second leg.Chelsea fail to win in their first 3 matches of a calendar year for the first time in 25 years. @ChelseaFC #ChelseaVArsenal
— Gracenote Live (@GracenoteLive) January 10, 2018


