Joining the waves, Andy Murray was stunned when the news of Rafael Nadal’s shocking Wimbledon exit hit his ears.

Astonished, he opines that the outcome serves up as a caveat to the rest of the top players as the tournament approaches the second week at the renowned All England Club.

The 10^th-seeded Nadal’s disaster-prone fortune continued on the formal grass when he suffered an out-of-the-blue 7-5 4-6 6-3 6-3 defeat at the hands of German journeyman Dustin Brown in the second round of the prestigious event on Thursday.

“When that happens, it’s always a bit of a warning to everyone else,” a cautious Murray was quoted as saying by Sky Sports.

“The depth of tennis just now is very high and upsets happen, and for sure they happen more than they did a few years ago,” he added.

The 28-year-old Murray, the 2013 champion here, is through to the fourth round of the Championships after pulling off a 6-2 6-2 1-6 6-1 conquest of Italian Andreas Seppi.

He is slated to lock horns with Croatian giant Ivo Karlovic for a place in the quarter-finals.