"He's a diesel engine, he needs those reps": Roddick sees Nadal likely missing Madrid Open as concerning

Andy Roddick believes that it could be the beginning of the end for Rafael Nadal if he is set to miss nearly all warm-ups before Roland Garros.

Roddick was asked the question and gave the following response saying that as he recovers, he can't do it as quick as he used to and for the rest of his career, it will all be geared towards French Open.

"Yeah, it very well could be. Listen, did any of us think he was going to sneak two slams in last year, be healthy, and play a solid amount of tennis through the first seven months? Probably not."

"The space between his injuries is getting tighter and tighter. It seems like they are cumulative now," Roddick added.

"Whereas he used to play, he would take three or four months off at a time but then come back completely healthy. It does not seem like he has been completely healthy since last year's run at Wimbledon."

"For the rest of his career, he is going to draw a bright red circle around the French Open and do everything in his power to get matches going in.

"This is a real concern if he's missing out on Monte-Carlo, Barcelona, and Madrid. He's a diesel engine, he needs those reps going into events. This is very concerning for Rafa fans," he concluded.