The play opened up for Forsberg on the edge of the area who shimmied away from the marker and then hit an effort goalbound. "It brings tears to my eyes". No more cult of the individual - Zlatan Ibrahimovic ruled the team for more than a decade before retiring from global play in 2016 - but instead an emphasis on the team.
Forsberg scored his first World Cup goal for Sweden with his 14th shot of the tournament. "Even if he doesn't succeed in every part of his game, he does very well". He had little to work with when he did find space and get his head up, but was deserving of his luck when he cut in on his right foot in the 66th minute and took a shot that was deflected past Yann Sommer and into the net.
While Switzerland will be hoping to reach the last-eight at the World Cup after 64 years, in-form Sweden are counting on their good form to end a 24-year-long wait for a quarter-final berth. Limited but with a highly effective game plan, the Swedes should not be underestimated.
Switzerland are unbeaten in Russian Federation following draws against Brazil and Costa Rica and a dramatic win over Serbia meaning the world's 6th ranked side have only been defeated in one of their last 25 games (W17, D7). The whistle went, and they danced and sung in front of their light but loud support, ecstatic simply that they were World Cup quarter-finalists once more.
Forsberg is also Sweden's set-piece specialist and will relish the chance to go for goal should his team be awarded a free-kick around the England penalty area.
Switzerland could not retaliate immediately, waiting until the last 10 minutes of the match to pressure their opponents.
The second half began just like the first, with Sweden looking the most likely team to score.
Albin Ekdal also volleyed over twice.
Having helped boot reigning champions Germany out of the competition in the group stage, the Swedes have now disposed of what was the highest-ranked team left in the bottom-half of the draw. Only during the stoppage time, a header from substitute Seferovic could draw a good save from Olsen.
"We're sorely disappointed, we wanted to do more", said Swiss coach Vladimir Petkovic.
"When they score a goal, it is always extremely hard to crack that tough nut".
Forsberg has been tasked with taking over the creative mantle since Zlatan Ibrahimovic retired from global football two years ago and the 26-year-old delivered when it mattered.
Sweden right back Mikael Lustig will miss the quarterfinals after collecting his second yellow card of the tournament for a tug on Switzerland striker Josip Drmic in the first half.
For Sweden, Gustav Svensson replaced Sebastian Larsson in midfield.
A low-quality match featured some of the worst finishing seen so far at the World Cup, and two efforts stood out.