Germany do not have a formidable World Cup reputation for nothing.The four-time winners were wobbling badly against a disciplined and polished Ivory Coast, trailing 1-0 to Franck Kessie’s goal and looking ragged.But then enter Deniz Undav. The Stuttgart striker plundered two second-half goals, including a stoppage-time winner, to earn his side a 2-1 win and a place in the last 32.Here, The Athletic analyses the major talking points.Do Germany look like winners?This game is only the second comeback win all tournament after South Korea against Czech Republic. For most of it, Germany did not look like the inevitable winners, and perhaps that stands them in good stead for the knockout rounds.Their attacking play was poor in the first half, as Nageslmann’s midfielder-heavy system struggled against the 4-1-4-1 block set by Ivory Coast. Neither Florian Wirtz nor Jamal Musiala could get on the ball in dangerous spaces, and besides the underlapping of left-back Nathaniel Brown, Germany had few runners or players creating space. Their best moment? A Kai Havertz header off Joshua Kimmich’s cross, which forced a good save from Yahia Fofana.They looked significantly better following the triple sub on 60 minutes, which saw the introduction of Deniz Undav into a strike partnership with Havertz, and meant they finally had bodies in the box to cross at. Only eight minutes after coming on did substitutes Nadiem Amiri and Undav combine, the former crossing for the latter to tap in.After that, Ivory Coast retreated to preserve the point, though could have won it late on when Simon Adingra got his feet tangled on a counter-attack. The Germany winner was surgical in its execution: Felix Nmecha fired a pass through midfield and into Undav’s feet, and he scored on the swivel.At the very least Germany will not replicate the group-stage exits of 2018 and 2022. Unconvincing but effective is subtle shades of Argentina four years ago.Liam TharmeHow good was supersub Undav? The equaliser and winner were obviously good moments for Nagelsmann. Two of his substitutes combining for the first goal, with Mainz’s Nadiem Amiri crossing for Stuttgart’s Deniz Undav. It was a moment typical of both players: Amiri’s cross was measured and teased, Undav’s finish was ruthless. Other than Harry Kane, nobody scored more goals in the Bundesliga last season than he did and this game was ultimately a reminder of how and why.Well done to Nagelsmann for that change; removing Musiala for Amiri would have been especially unpopular had it gone wrong.But Undav and his double were the real story. His career began in the German fourth tier and he was playing in the 3.liga as recently as six years ago. He was plucked from that level by Royale Union Saint-Gilloise and set on a trajectory which now, many years later, has him as his country’s premier Break Glass for Emergency option at a World Cup.Deniz Undav equalises for Germany (Robert Cianflone/Getty Images)He delivered; how Germany needed him and his brand of finishing. But the analysis is still mixed. Positive because Nagelsmann had a player capable of snaffling opportunities like that and snatching victory from defeat, but less so because he needed Undav in the first place, to alter the perception of such a loose and often stale performance.