Seguel's first-round win over Nicole Gibbs was the first professional match won by a Chilean female tennis player since 1980.

She played her first tournament at the first Open Junior International Chile, in May, and reached the quarterfinals, before losing to Argentinian player Ornella Caron, in straight sets.

In 2010, she played her last junior tournament, at the 27th Copa Gerdau in Porto Alegre, Brazil where she was stopped in the second round by Slovak player Jana Čepelová.

She lost the final in straight sets to Colombian player Karen Castiblanco and in November she won her first ITF title at a $10k in Concepción, Chile, alongside compatriot Fernanda Brito.

In January 2024, she made her debut at the 2024 United Cup in mixed doubles partnering Tomas Barrios Vera where they stunned Greek top 10 duo Maria Sakkari and Stefanos Tsitsipas.