Agnes Knochenhauer

In 2009, Knochenhauer played at the 2009 World Junior Curling Championships as third for the Anna Hasselborg rink. Sweden finished with a 4–5 record and a 6th-place finish. At the 2010 World Junior Curling Championships, Sweden upset the Canadian rink skipped by Rachel Homan in the final by a score of 8–3.

At the 2013 Winter Universiade, Knochenhauer and her team had a 5th-place finish.

Knochenhauer has graduated from the junior level and has won three tour events in her career, the 2011 Glynhill Ladies International, the 2016 Oakville OCT Fall Classic, and the 2016 Stockholm Ladies Curling Cup.[3]

In 2013, Knochenhauer was the alternate for the Margaretha Sigfridsson rink at the 2013 World Women's Curling Championship. Sweden made it all the way to the final where they lost 6–5 to Scotland's Eve Muirhead. The Swedish team finished 5th at the 2014 European Curling Championships.

In February 2018, her team of Anna Hasselborg, Sara McManus and Sofia Mabergs won the gold medal at the 2018 Winter Olympics in PyeongChang defeating Kim Eun-jung in the final. The next month, the rink made it to the final of the 2018 Ford World Women's Curling Championship but they lost in an extra end to Canada's Jennifer Jones.

Knochenhauer won her first Grand Slam in the inaugural women's Elite 10 in 2018, going undefeated through the tournament and defeating Silvana Tirinzoni in the final.[4] At the 2018 Masters, the Hasselborg rink won their second straight slam, defeating Rachel Homan in the final. The team lost the world final once again at the 2019 World Women's Curling Championship, this time to Silvana Tirinzoni.

Team Hasselborg began the 2019–20 season at the Stu Sells Oakville Tankard where they defeated Anna Sidorova in the final. They missed the playoffs at the 2019 AMJ Campbell Shorty Jenkins Classic after going 2–2 in the round robin. They defended their title at the 2019 European Curling Championships. Down 4–3 in the tenth end of the final to Scotland's Eve Muirhead, Hasselborg made a runback on her final stone to score two and win. In Grand Slam play, Team Hasselborg were the most dominant team on the women's side, winning them the 2019–20 Pinty's Cup. They lost in the semifinal of the Masters to Tracy Fleury before winning the next three Slams, the Tour Challenge, National and the Canadian Open. The team was set to represent Sweden at the 2020 World Women's Curling Championship before the event got cancelled due to the COVID-19 pandemic.[5][6] The Canadian Open would be their last event of the season as both the Players' Championship and the Champions Cup Grand Slam events were also cancelled due to the pandemic.[7] Also during the season, Knochenhauer paired up with Rasmus Wranå for the Swedish Mixed Doubles Curling Championship which they won. They were going to compete at the 2020 World Mixed Doubles Curling Championship but that event was also cancelled.[8][9]

The Hasselborg rink won the first event of the 2020–21 season, defeating Raphaela Keiser in the final of the 2020 Women's Masters Basel.[10]

In 2016 she was inducted into the Swedish Curling Hall of Fame.