This week's sport on the BBC includes international football, BBL Championship basketball and the return of Formula 1.
Britons Kyle Edmund, Dan Evans and Heather Watson lose to qualifiers in the first round in Miami, while Aljaz Bedene retires in his match.
The Miami Open first-round match between Tommy Haas and Jiri Vesely is briefly interrupted by an unusual intrusion.
Petra Kvitova speaks of her determination to return to tennis following a knife attack at her home in December.
Britain's Aljaz Bedene comes through the first round of qualifying at the Miami Open but compatriots Naomi Broady and Katie Swan are out.
The extent of doping in amateur sport - as revealed by a poll for the BBC - is a "concern", says sports minister Tracey Crouch.
UK Anti-Doping says drug use in sport is "fast becoming a crisis" in response to a poll for BBC Sport into doping in amateur sport.
Roger Federer beats Stan Wawrinka in straight sets in an all-Swiss BNP Paribas Open final at Indian Wells.
World number two Novak Djokovic joins Andy Murray in withdrawing from next week's Miami Open because of an elbow injury.
Roger Federer will face Stan Wawrinka in an all-Swiss Indian Wells final on Sunday after both win in straight sets.
Britain's world number one Andy Murray pulls out of next week's Miami Open with an injury to his right elbow.
Australia's Nick Kyrgios withdraws before his quarter-final against Roger Federer at Indian Wells with food poisoning.
France's Kristina Mladenovic beats Danish former champion Caroline Wozniacki to reach the Indian Wells semi-finals.
The US women's ice hockey team are planning to boycott the world championships over the dispute.
Maria Sharapova returns from her doping ban in six weeks time, but Russell Fuller looks at whether she will get invites to the French Open and Wimbledon
The rules on wildcards handed to players who have been suspended could be reviewed in the wake of Maria Sharapova's return from a doping ban.
Roger Federer claims a third straight win over Rafael Nadal for the first time in his career in Indian Wells.
Roger Federer and Rafa Nadal set up a fourth-round tie at the BNP Paribas Open in Indian Wells - a re-run of this year's Australian Open final.
Jamie Murray is the last British player left in the BNP Paribas Open after brother Andy Murray and Dan Evans are knocked out of the doubles.
Fourth seed Kei Nishikori beats British number two Dan Evans 6-3 6-4 in round two of the BNP Paribas Open at Indian Wells.