American world number four Taylor Fritz said Thursday he will donate his $82,000 first-round prize money from the Australian Open to help victims of the Los Angeles wildfires, calling the devastation "insane".

Learner Tien and Alex Michelsen were born about 15 months apart and first crossed paths a decade ago when they were playing in Southern California tennis

Learner Tien and Alex Michelsen were born about 15 months apart and first crossed paths a decade ago when they were playing in Southern California tennis tournaments for kids. Tien, now 19, and Michelsen,

Learner Tien, a 19-year-old from California, became the youngest American man to reach the Australian Open's third round since 1990, upsetting No. 5 Daniil Medvedev in five sets.

American tennis player dedicates his first-ever Grand Slam victory to his home of Altadena, currently ravaged by the Los Angeles wildfires.

American tennis player Taylor Fritz is donating the prize money he earned for his first-round victory at the Australian Open — about $82,000 — to relief funds to help people affected by the wildfires

There are three American men aged 23 and under in the second week of a Grand Slam. That hasn't happened since 2003

Experts say it is only a matter of time until major Australian cities experience “house-to-house ignition” on a similar scale to Los Angeles.

Defending champion Jannik Sinner lost his first set since October but recovered to beat Tristan Schoolkate and reach the third round of the Australian Open.

"The experience of losing your home is like a cleaver splitting life into two parts, the before and the after."

Taylor Fritz has pledged to give away all of his first round winnings. The American No.1 is into the third round of the Australian Open and made the heart-warming announcement following his match.

Moving, surprising, inspiring, terrifying, shocking... This is a selection of images from our planet, over the past three days.