Rafael Nadal's impending retirement will loom over the Davis Cup Final 8 when play begins Tuesday in Malaga, Spain.

The 22-time Grand Slam champion Rafael Nadal, worn down by years of injuries after two decades on tour, is not in the best of health. While he will partner with Carlos Alcaraz in the doubles at Davis

Andy Murray says his long-time rival hasn't changed a bit in the 25 years they've known one another. Nadal will look to bring Spain another Davis Cup title - 20 years after he won his first for the nation.