Two friends from California, Learner Tien and Alex Michelsen, have both reached the fourth round at the Australian Open. Tien is 19, and Michelsen is 20. They are two of ...

Two of four American men still playing in Melbourne, Irvine native Tien, 19, and Aliso Viejo native Michelsen, 20, became ...

American star Coco Gauff and newcomer Learner Tien are still in the draw at the Australian Open -- but who else is? We break ...

Frances Tiafoe has thrown up during a first-round match at the Australian Open along the way to a five-set victory.