Daniela Hantuchová (born April 23, 1983) is a Slovak professional tennis player. She turned professional in 1999 and had her breakthrough year in 2002, when she won her first Tier I tournament and ended the year in the top ten. She is currently coached by Larri Passos. Her WTA Tour mentor in the "Partners for Success" program was Martina Navrátilová, who was her doubles partner for a brief period in early 2005. As of January 10, 2011, Hantuchová is ranked World No. 31 in singles.
Hantuchová started the year as the world number 38, being known as a new up-and-coming player, in the Gold Coast where she lost to World No. 7 Justine Henin in the second round in a three setter 1–6, 6–0, 6–3. After reaching the last 16, after qualifying, in Sydney, Hantuchová went on to play at the Australian Open losing in the third round to the second seed Venus Williams 3–6, 6–0, 6–4. After climbing the rankings to world number 26, having competed in Paris and Antwerp (reaching the round of 16 in both), she went into the prestigious Indian Wells event, defeating Justine Henin in the fourth round 6–3 6–3 and Martina Hingis in the final 6–3 6–4.
Hantuchová started 2003 solidly, reaching the quarterfinals at her first three events in Sydney, losing to Lindsay Davenport 6–4 3–6 7–6(3), Venus Williams 6–4 6–3 at the Australian Open (her third Slam quarterfinal in a row), and Elena Dementieva in Paris 7–5 6–3. Hantuchová reached her first semifinal of the year at her fourth event in Antwerp, losing to Williams again, 6–1 6–4. By then, Hantuchová's ranking was at a career high No. 5. Defending a title for the first time in her career, Hantuchová advanced to the fourth round in Indian Wells, losing to Amanda Coetzer 6–4 6–4. Despite a first round loss to Alicia Molik in Miami, Hantuchová rebounded in the Tier I Charleston event, making her fifth quarterfinal in seven events, losing to Ashley Harkleroad 6–2 6–1.
Following the match, her extremely thin physique was noticed for the first time publicly and some wondered about Hantuchová's health. Kicking off the grass season in Eastbourne, Hantuchová lost in the quarterfinals to Conchita Martínez, but more famously she lost in the second round of Wimbledon to Shinobu Asagoe 0–6 6–4 12–10, with Hantuchová breaking down crying during the latter stages of the match in the midst of making 57 unforced errors. Some theorized that the media's continued interest regarding her weight and the pressure of success at 19 years of age, in addition to her on-court breakdown and her parents' divorce, her coach walked out during the middle of the match.
Hantuchová and her partner Ai Sugiyama made it to the final, where they lost to Serena Williams and her sister Venus Williams. Hantuchová started the 2010 tour by competing at the Brisbane International. Seeded fourth, Hantuchová was upset by unseeded Andrea Petkovic in the quarterfinals 6–4, 6–2. At the Medibank International in Sydney, Hantuchová fell to No. 5 seed and eventual champion Elena Dementieva in the second round 6–2, 4–6, 6–2. Seeded 22nd at the Australian Open, Hantuchová fell to 16th seed and eventual semifinalist Li Na in the third round 7–5, 3–6, 6–2. Hantuchová defeated Zhang Shuai 6–0, 6–1 in the Fed Cup tie against China in Bratislava, Slovakia prior to the Dubai Tennis Championships in Dubai, UAE. In Dubai, Hantuchová upset No.5 seed Dementieva through retirement after winning the first set 6–4. However, she fell to Anastasia Pavlyuchenkova in the third round 6–3, 6–4.
Hantuchová was seeded No. 2 at the Monterrey Open in Monterrey, Mexico. She became one of the favorites after No. 1 seed Jelena Janković fell in the first round. Hantuchová fought from a set down to beat unseeded Vania King 2–6, 6–2, 6–1 in the quarterfinals and No. 4 seed Dominika Cibulková 4–6, 6–3, 6–0 in the semifinals. However she fell to No. 3 seed Anastasia Pavlyuchenkova in the finals 1–6, 6–1, 6–0. It was Hantuchová's first final since Linz in 2007. Hantuchová was upset at the BNP Paribas Open by Roberta Vinci in the second round after injuring her back during training earlier that day. At the Sony Ericsson Open she gained a career best in Miami reaching the fourth round after recording straight set victories over Patty Schnyder and No. 16 seed Nadia Petrova, but lost a very tight three set match to No. 3 seed and eventual finalist Venus Williams 1–6, 7–5, 6–4 in nearly three hours.
