Australia's Samantha Stosur wasted a match point before crumbling to a three-set loss to Simona Halep in the fourth round of the Miami Open.

A frustrated Nick Kyrgios has prevailed over big-serving Ivo Karlovic in three tough sets to progress to the fourth round of the Miami Open.

• Eamonn Tiernan

Kyrgios hosted a Q&A; with his Twitter followers where he called for equality in player sanctions.

• Gene Cherry

Rafael Nadal has recovered from a dismal start to beat Philipp Kohlschreiber in the third round of the Miami Open.

• Warren Barnsley

Samantha Stosur has progressed to the fourth round of the Miami Open with a tough three-set victory over Shuai Peng.

• Gene Cherry

Second seed Kei Nishikori of Japan outlasted Spain's Fernando Verdasco 7-6(2) 6-7(5) 6-1 in a nearly three-hour marathon match at the Miami Open.

Volatile Australian beats Damir Dzumhur in second-round clash, after copping a code violation for swearing at a spectator.

Australia's Ajla Tomljanovic has scored an upset victory over world No.13 Elena Vesnina at the Miami Open.

• Eamonn Tiernan

ACT Claycourt International top seed Jordi Samper-Montana's brother plays for Barcelona FC.

Nick Kyrgios has copped his share of match fines but his willingness to jokingly stick the boot into others over on-court misbehaviour may have landed him an adversary.

• Linda Pearce

Australian tennis comeback star Ashleigh Barty has stretched her winning streak to eight matches by beating former top-five player Eugenie Bouchard at the Miami Open.

• Eamonn Tiernan

The ACT Claycourt International has marked a successful comeback for former tennis prodigy Jason Kubler.

Kyrgios will open his campaign in Miami against either Damir Dzumhur or Hyeon Chung - both ranked outside the world top 50.

• Christopher Clarey

For a man who has, in his own mind, not yet completed his comeback, Roger Federer is faring rather well.

• UPDATED

A revived Roger Federer beat fellow Swiss Stan Wawrinka 6-4 7-5 in the BNP Paribas Open final to earn a record-tying fifth Indian Wells title and distinction as the tournament's oldest winner.

• Eamonn Tiernan

Marc Polmans has prevailed in the ACT Claycourt International final against Blake Mott in a thriller.

• UPDATED
• Theo Katsaros

Nick Kyrgios has pulled out of his scheduled clash with Roger Federer at the BNP Paribas Open due to sickness.

• Eamonn Tiernan

Australian tennis young gun Omar Jasika has been on fire at the ACT Claycourt International this week.

• Linda Pearce

Nick Kyrgios has spoken of emerging from the "dark place" that threatened to engulf his tennis career following his controversial Australian Open loss to Andreas Seppi, his newfound enjoyment for the game manifesting in a second straight sets defeat of Novak Djokovic in the space of a fortnight.

• Darren Walton

Nick Kyrgios has upstaged Novak Djokovic for the second time in a fortnight to power into the Indian Wells quarter-finals for the first time.

• Darren Walton

Nick Kyrgios has outclassed Alexander Zverev in the battle of tennis' next-gen leaders to storm into the fourth round of the Indian Wells Masters.

Samantha Stosur has been knocked out of the Indian Wells tennis tournament in California, losing her second-round match against Julia Goerges 6-4, 4-6, 4-6.

• Darren Walton

Lleyton Hewitt is not happy as tennis officials move ever closer to scrapping best-of-five-set matches from Davis Cup.

• Eamonn Tiernan

Canberra teenager Dimitri Morogiannis progressed on day one of the ACT Claycourt International qualifiers.

• Eamonn Tiernan

The first ACT Claycourt International instalment kicks off on Tuesday with James Frawley securing a wildcard.

Bernard Tomic's woeful run on the ATP Tour continues with the Australian eliminated in straight sets by American wildcard Bjorn Fratangelo in the opening round of the BNP Paribas Open at Indian Wells.

• Helene Elliott

Serena Williams has withdrawn from the Indian Wells Open and the Miami Open, which starts on March 20.

• Linda Pearce

Ash Barty awoke to a phone full of test messages in Kuala Lumpur on Monday after becoming the first Australian woman not named Sam Stosur to win a WTA singles title in six years, but one from a fellow fisherwoman with whom Barty has formed a close bond was particularly special. Evonne Goolagong Cawley was among the well-wishers; Barty was thrilled.

Australian qualifier Ashleigh Barty has breezed past Japan's Nao Hibino 6-3 6-2 in a rain-hit Malaysian Open final to win her first WTA singles title in Kuala Lumpur.