In 2019, Berry joined the
Illawarra Steelers Tarsha Gale Cup side, scoring two tries in their 24–12 Grand Final win over the
Newcastle Knights. On 21 June 2019, she started on the for New South Wales under-18, scoring two tries in a 24–4 win over Queensland.
2020 In 2020, Berry began the season playing for the Steelers in the
Tarsha Gale Cup. On 24 September, Berry joined the
St. George Illawarra Dragons NRL Women's Premiership team. In Round 3 of the
2020 NRL Women's season, she made her debut for the Dragons, scoring a try and kicking a goal in a 10–22 loss to the
New Zealand Warriors.
2021 Berry was a part of the Dragons side that made the delayed 2021 NRLW Grand Final, in the 16–4 defeat to the Sydney Roosters.
2023 Berry was selected in the extended NSW squad for Game 1 of Women's State of Origin. Teagan Berry was named as the new fullback for the Dragons in 2023, following the departure of 2021 Dally M Winner and Olympic Gold Medallist Emma Tonegato. Currently, Berry is the outright leading tryscorer of all time in NRLW history with 21 tries in just 23 games. In Round 6 of the 2023 season, Berry became the third NRLW player to score four tries in a match. Berry was named at fullback for the Australian Prime Minister's XIII team to play
Papua New Guinea in the annual fixture in
Port Moresby in September. Berry won the 2023 RLPA Players Champion Award as voted by her peers and was selected in the end of season Jillaroos squad but did not play.
2025 Teagan Berry re-signed with the Dragons until the end of the 2026 season ==References==