Serena Williams poses with her Nike Pleated Knit Dress, which debuted at the 2013 Australian Open in Melbourne, Australia, Jan. 8, 2013. Getty

Tennis superstar Serena Williams announced her engagement to Reddit co-founder Alex Ohanian in a short poem posted on the website Thursday. The announcement wrapped up quite a year for Williams, one in which she won her 22nd grand slam title and ousted Maria Sharapova as the world’s highest-paid female athlete.

Williams, 35, saw her net wealth soar to $150 million in 2016, according to Forbes. This year alone she made almost $29 million, placing her 40th on the list of world’s highest-paid athletes, up from 47th in 2015. In contrast, Williams’ future husband has a net worth of about $4 million, according to The Heavy. Throughout her career, the tennis all-star has accumulated more than $77 million in prize money. Williams has been backed by Nike, her largest sponsor, since 2004. Her original deal with Nike was valued at $40 million, plus performance bonuses and sales royalties. Since that five-year deal ended, she has signed multiple additional deals with the athletic company.

Williams also has deals with Delta Airlines, Pepsi, IBM, Audemars Piguet, Beats, Bureli Bras and a multitude of other high profile companies. She has a clothing line with the Home Shopping Network and along with her sister Venus, owns a partial stake in the NFL’s Miami Dolphins, according to Forbes.

Williams’ $150 million price tag is twice as large as her sister Venus’ net wealth. It’s 50 percent larger than Sharapova’s and one third as large as Roger Federer’s, according to Money Nation.

Serena Williams attends the launch of her new Nike outfit at the Prince Hotel at St. Kilda in Melbourne, Australia, Jan. 13, 2005. Getty

It’s likely Williams could see her net worth go up if she breaks the existing Grand Slam record as she has set out to do. By winning at Wimbledon in July, she tied Steffi Graf at 22 wins. Williams will compete in the Australian Open in January, where she has already accumulated six career titles.