Ahmed Musa scored twice on his return to the starting line-up as Nigeria kept their World Cup knockout hopes alive and dealt Iceland's chances a blow with a 2-0 win in Volgograd
The Leicester forward, on loan at CSKA Moscow last season, struck a volleyed opener four minutes after the restart and further repaid boss Gernot Rohr's faith with a fine second 15 minutes from time
Gylfi Sigurdsson looked set to give Iceland a late lifeline when Alfred Finnbogason earned a VAR-awarded penalty, but the Everton playmaker ballooned his 83rd-minute effort over the bar
The result boosts beleaguered Argentina's hopes as well as the Super Eagles', but victory for Nigeria against Lionel Messi and co on Tuesday would see Rohr's side through alongside Croatia
Iceland, who could still progress themselves but must win, started briskly as Sigurdsson saw a free-kick pushed away before curling straight at teenage goalkeeper Francis Uzoho from open play
Nigeria were feeling their way into the contest as action in the stands - a Mexican wave soon followed by the booming Viking Thunderclap - caught the eye instead, but though Kelechi Iheanacho and Victor Moses were busy, they failed to muster a first-half shot
Iceland were content to sit back against ineffective opponents but Aston Villa's Birkir Bjarnason had chances from a flurry of balls into the box, volleying over after a long throw and swiping through air when when Birkir Saevarsson drilled a dangerous diagonal across goal
The game had been short on quality where it mattered but when the breakthrough came, it was in style
 Moses was set free, ironically, by a familiar long Iceland throw but Musa stretched brilliantly to control his cross, before readjusting and lashing home
Wilfred Ndidi's effort was well saved by goalkeeper Hannes Halldorsson as Iceland were rocked and Musa was soon in the mood again
Moments after rattling the crossbar with a curling effort, he raced onto Leon Balogun's ball down the left, darting inside Kari Arnason and then rounding Halldorsson before tucking into an empty net
Iceland were handed a way back when Tyronne Ebuehi was adjudged to have caught Finnbogason, referee Matthew Conger consulting with VAR before pointing to the spot, but though he had confidently clutched the ball in anticipation, Sigurdsson's aim was off
Iheanacho fired wide for Nigeria in the closing stages and Finnbogason's angled drive was saved by Uzoho at the other end but time ran out for Iceland, their hopes of progress now in peril
Musa had to settle for coming off the bench in an opening defeat to Croatia but how he made his point here
 Agility and quick feet were key to his first goal while pace and trickery delivered the second
 With four goals, he is now his country's all-time top scorer in World Cup games; only Asamoah Gyan (six for Ghana) and Roger Milla (five for Cameroon) have scored more for an African nation
Nigeria take on Argentina in a crunch St Petersburg clash at 7pm on Tuesday, while Iceland face already-through Croatia at the same time in Rostov-on-Don knowing only victory will do
 Three sides remain in the hunt to qualify but goal difference could come into play
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>
<PAD>