During the off season, Radwańska switched her racquet make from Babolat to Srixon.
She began the year at the Shenzhen Open as the top seed and defending champion, where she reached the quarterfinal before losing to Alison Riske.
The following week, she reached the final at Sydney International defeating Christina McHale, Duan Yingying, and Barbora Strýcová before losing to Johanna Konta.
Seeded third at the Australian Open she defeated Tsvetana Pironkova.
In the second round she lost to the eventual semifinalist Mirjana Lučić-Baroni.
Following a second round loss to Caroline Wozniacki at the Qatar Open, Radwańska competed at the Dubai Tennis Championships.
As the fourth seed, she received a bye into the second round where she defeated Belgian qualifier Elise Mertens in straight sets.
She lost to Catherine Bellis in the third round.

In March, Radwańska celebrated her 28th birthday as she prepared for the Indian Wells Open.
At the Indian Wells Tennis Garden she defeated Sara Sorribes Tormo before losing to Peng Shuai in the third round.
Next she competed in the Miami Open, where she defeated Wang Qiang in straight sets for a rematch with the Australian Open semifinalist Mirjana Lučić-Baroni.
Lučić-Baroni defeated Radwańska for a second time in 2017, this time for the loss of just three games.

In April, Radwańska began her clay season at the Porsche Tennis Grand Prix as the 7th seed.
She lost in straight sets to Ekaterina Makarova in the first round.
She later withdrew from her forthcoming tournaments in Madrid and Rome, citing a foot injury.
At the French Open Radwańska was seeded at No.9.
In her first match after being sidelined for five weeks due to a right foot injury she eased past Fiona Ferro in straight sets in just over an hour.
In the second round she defeated Belgium's Alison Van Uytvanck to face Alizé Cornet in the third round.
Radwańska had won seven of their eight previous matches, including the only one on clay - at the French Open nine years ago - but this time lost to Cornet in two sets.
Radwanska withdrew from the Ricoh Open and Aegon Classic Birmingham due to a viral illness.
She came into the Aegon International as the No.
9 seed but fell to Lauren Davis.
Radwańska then started her Wimbledon Championships campaign where she defeated Jelena Janković, Christina McHale and Timea Bacsinszky before falling to Svetlana Kuznetsova in the fourth round.

Radwańska began her summer hard-court season at the Rogers Cup in Toronto, Canada, where she defeated CoCo Vandeweghe and Tímea Babos before falling to Caroline Wozniacki in the third round.
As the defending champion and top seed at the Connecticut Open she defeated Eugenie Bouchard and Peng Shuai before losing to Daria Gavrilova in her second semifinal of the season.
This result saw her fall out of the top 10 for the first time since 2015.
Following New Haven Open Radwańska entered US Open, where she was seeded 10th.
She defeated Petra Martić and Yulia Putintseva in straight sets to advance to the third round.
In the third round she lost a tight 3 hour/3 set match to CoCo Vandeweghe.

Radwańska was forced out of the Pan Pacific Open tournament in Tokyo due to a bout of flu.
At the Wuhan Open, she scored her fifth career win over Wimbledon semifinalist Magdaléna Rybáriková in the first round.
She defeated Julia Görges in the second round, claiming her 500th main draw victory on the WTA.
Radwańska avenged her straight-set loss to Görges earlier this year, at the Western & Southern Open in Cincinnati, and increased her head-to-head record against the German to four wins and two losses.
A quarterfinalist in Wuhan last year, Radwańska lost to the eventual finalist, Ashleigh Barty in the third round, after the Australian dispatched No.
5 seed Johanna Konta.
Radwańska began her title defense at the China Open with two straight-sets victories over Carina Witthöft and Zhang Shuai before falling to Daria Kasatkina in a third-round three set meeting.
Radwańska ended her season ranked 28th, her worst since 2005, following a second round defeat in Hong Kong to Samantha Stosur.
During the off season, Radwańska switched her racquet make from Babolat to Srixon. She began the year at the Shenzhen Open as the top seed and defending champion, where she reached the quarterfinal before losing to Alison Riske. The following week, she reached the final at Sydney International defeating Christina McHale, Duan Yingying, and Barbora Strýcová before losing to Johanna Konta. Seeded third at the Australian Open she defeated Tsvetana Pironkova. In the second round she lost to the eventual semifinalist Mirjana Lučić-Baroni. Following a second round loss to Caroline Wozniacki at the Qatar Open, Radwańska competed at the Dubai Tennis Championships. As the fourth seed, she received a bye into the second round where she defeated Belgian qualifier Elise Mertens in straight sets. She lost to Catherine Bellis in the third round.
In March, Radwańska celebrated her 28th birthday as she prepared for the Indian Wells Open. At the Indian Wells Tennis Garden she defeated Sara Sorribes Tormo before losing to Peng Shuai in the third round. Next she competed in the Miami Open, where she defeated Wang Qiang in straight sets for a rematch with the Australian Open semifinalist Mirjana Lučić-Baroni. Lučić-Baroni defeated Radwańska for a second time in 2017, this time for the loss of just three games.
In April, Radwańska began her clay season at the Porsche Tennis Grand Prix as the 7th seed. She lost in straight sets to Ekaterina Makarova in the first round. She later withdrew from her forthcoming tournaments in Madrid and Rome, citing a foot injury. At the French Open Radwańska was seeded at No.9. In her first match after being sidelined for five weeks due to a right foot injury she eased past Fiona Ferro in straight sets in just over an hour. In the second round she defeated Belgium's Alison Van Uytvanck to face Alizé Cornet in the third round. Radwańska had won seven of their eight previous matches, including the only one on clay - at the French Open nine years ago - but this time lost to Cornet in two sets. Radwanska withdrew from the Ricoh Open and Aegon Classic Birmingham due to a viral illness. She came into the Aegon International as the No. 9 seed but fell to Lauren Davis. Radwańska then started her Wimbledon Championships campaign where she defeated Jelena Janković, Christina McHale and Timea Bacsinszky before falling to Svetlana Kuznetsova in the fourth round.
Radwańska began her summer hard-court season at the Rogers Cup in Toronto, Canada, where she defeated CoCo Vandeweghe and Tímea Babos before falling to Caroline Wozniacki in the third round. As the defending champion and top seed at the Connecticut Open she defeated Eugenie Bouchard and Peng Shuai before losing to Daria Gavrilova in her second semifinal of the season. This result saw her fall out of the top 10 for the first time since 2015. Following New Haven Open Radwańska entered US Open, where she was seeded 10th. She defeated Petra Martić and Yulia Putintseva in straight sets to advance to the third round. In the third round she lost a tight 3 hour/3 set match to CoCo Vandeweghe.
Radwańska was forced out of the Pan Pacific Open tournament in Tokyo due to a bout of flu. At the Wuhan Open, she scored her fifth career win over Wimbledon semifinalist Magdaléna Rybáriková in the first round. She defeated Julia Görges in the second round, claiming her 500th main draw victory on the WTA. Radwańska avenged her straight-set loss to Görges earlier this year, at the Western & Southern Open in Cincinnati, and increased her head-to-head record against the German to four wins and two losses. A quarterfinalist in Wuhan last year, Radwańska lost to the eventual finalist, Ashleigh Barty in the third round, after the Australian dispatched No. 5 seed Johanna Konta. Radwańska began her title defense at the China Open with two straight-sets victories over Carina Witthöft and Zhang Shuai before falling to Daria Kasatkina in a third-round three set meeting. Radwańska ended her season ranked 28th, her worst since 2005, following a second round defeat in Hong Kong to Samantha Stosur.

Agnieszka Radwańska