Lacazette's stunning headed opener on two minutes underlined Arsenal's undoubted brilliance on the front foot; an attacking ability strengthened by the arrival of the club's record signing.
Since the start of last season, Giroud has scored seven Premier League goals coming off the bench - three more than any other player in the same period.
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A separate report from the Labor Department showed an unexpected uptick in initial jobless claims in the week ended August 5th. In the United Kingdom , gold mining stocks Randgold Resource and Fresnillo were among the few to gain - up 2.8% and 4.9%.
Shinji Okazaki heads in the equaliser from close range.
Arsenal fans heading to the Emirates would have been desperate to see Lacazette get off to a fast start at his new club.
Mesut Ozil played a pass in to Lacazette, who tried to turn and fire, but his shot was fortuitously deflected right to Kolasinac, who unselfishly tapped across for Welebeck to score. But for Arsenal the same old problems at the back resurfaced in worrying fashion in their curtain raiser with Leicester. "I just think we are not open - what I said to you many times - to any offers, anyway".
He drove at Arsenal's defence and his sublime whipped cross found the England global who couldn't miss from inside the six-yard box completely against the run of play.
"We saw it though for 83 minutes", Leicester manager Craig Shakespeare said, "and to concede two late set-plays in the manner we did is obviously hard to take".
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Bautista Agut fought back from a set down and out-lasted Frenchman Gael Monfils 4-6 7-6 (7/5) 7-6 (7/2) in just under three hours. Federer's defeat of Bautista Agut was his seventh in a row without a defeat - or loss of a set - in the series with the Spaniard.
Eleven minutes into the second half Vardy restored Leicester City's lead. Wanting an offside call, the Leicester defense nearly all simultaneously stop and raised their arms.
After a much-needed break for all involved to take a deep breath, the second half started in much quieter fashion until ten minutes into the second period.
Arsene Wenger will be delighted if Lacazette puts in more performances like this. "As a game is in 90 that would guarantee you a goal".
Wenger further reiterated the point in his written press conference, describing Giroud's decision to remain with Arsenal as a "relief" and "one of the greatest days I've had in recent months".
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Officials in Guam are giving citizens advice on how to survive such an attack. "We take it lightheartedly", said Mark Alex, 26. Guam, an unincorporated US territory, is a strategic outpost about 2,100 miles (3,400 kilometers) south-east of Pyongyang.
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