Fresh off the semifinals of Indian Wells, Angelique Kerber took part in the Miami draw ceremony.
Flavia Pennetta, Gisela Dulko, Elena Vesnina, Paola Suarez, Michaella Krajicek and Sabine Lisicki.
The WTA players headed to the Miami Seaquarium to swim with the dolphins, a tradition in Miami.
Paola Suarez has returned to the WTA this year to play doubles with fellow Argentine Gisela Dulko.
Gisela Dulko and Paola Suarez, who joined forces in Bogota, are both former World No.1s in doubles.
Paola Suarez has 44 WTA doubles titles but none yet in Miami - she reached one final back in 2002.
World No.2 Maria Sharapova, fresh off the final of Indian Wells, at Tuesday's All-Access Hour.
Agnieszka Radwanska set a brand new career-high ranking this week, rising to No.4 in the world.
Caroline Wozniacki is a two-time quarterfinalist here in Miami, going that far in 2009 and 2010.
Alisa Kleybanova had an emotional return Tuesday after a 10-month lay-off due to Hodgkin's lymphoma.
Alisa Kleybanova, 22 years old, has been ranked as high as No.20 in singles and No.10 in doubles.
Alisa Kleybanova managed to win the first match of her comeback, beating Johanna Larsson, 26 63 62.
Alisa Kleybanova posed with her coach and best friend, Julian Vespan, after winning her match.
Anna-Lena Groenefeld and Galina Voskoboeva at a kids clinic, one of many off-court activities Tuesday.
World No.6 Caroline Wozniacki made a new friend as she attended the Miami Heat game Tuesday night.