Sagström grow up in a family were sport was a great interest and was used to physical practice from a young age. Nine years old, Sagström begun learning golf with her parents at Enköping Golf Club, 74 kilometres north-east of Stockholm, Sweden, and has continued to represent the club.
Amateur career
Only 16 years old, she won the 2009 Swedish Junior Stroke-play Championship over 72 holes at Österåker Golf Club outside Stockholm, by seven strokes, scoring five under par on the last 36 holes. In 2011, Sagström won the French Junior Championship at Golf de Saint Cloud outside Paris and was a member of the winning Swedish team at the European Ladies' Team Championship at Golf Club Murhof in Austria. Sagström played college golf with the LSU Lady Tigers team at Louisiana State University in Baton Rouge, Louisiana. She was 2015SEC Player of the Year at LSU and a finalist for the ANNIKA Award.
Professional career
Sagström made her professional debut at the 2015 Helsingborg Open on the Ladies European Tour in Sweden in September and earned her first pay-check. In 2016, Swedish former European Tour Order of Merit-winner Robert Karlsson became her mentor. She joined the Symetra Tour in United States in 2016, where she finished inside the top-5 in her first five starts. After victories at both the Chico Patty Berg Memorial in Fort Myers, Florida, and the Self Regional Healthcare Foundation Classic in Greenwood, South Carolina, Sagström led the tour's money list race with a wide margin, meaning she all but sealed her spot in the LPGA 2017 rookie class. With her third win at the Murphy USAEl Dorado Shootout in El Dorado, Arkansas, Sagström both secured the top spot on the final Volvik Race for the Card money list and earned a "Battlefield Promotion" to the 2016 LPGA Tour. She had a record breaking Symetra Tour season, becoming the first player in Tour history to crack $100,000 and $150,000, winning Player of the Year and Rookie of the Year honors. In 14 Symetra Tour starts, Sagström had three wins and 11 top-10 finishes. In December 2016, Sagström won the Ladies European Tour'sQ-School in Morocco, securing membership of the Ladies European Tour for 2017, a requirement to make her eligible for selection in the 2017 Solheim Cup. She was selected as a captain's pick by Annika Sörenstam to 2017 European Solheim Cup team and finished the 2017 LPGA Tour season 49th on the Order of Merit. She finished tied for second at the Pure Silk Championship on the LPGA Tour in May 2019. In her first tournament of the 2020 season, Sagström notched her first win on the LPGA Tour at the Gainbridge LPGA at Boca Rio played at Boca Rio Golf Club in Boca Raton, Florida. She finished with a one shot lead after making par on the final hole against Nasa Hataoka who made bogey. Sagström set the course record at Boca Rio firing a 62 in the second round of the tournament. Taking the 117th LPGA Tour win by a Swedish born player, Sagström became the 12th Swedish winner on the tour.
