To appreciate Nadal, watch what Murray had to endure

LONDON - To appreciate fully just how outstanding Rafael Nadal is at the moment — 28 consecutive completed sets won in Grand Slam play — consider what Andy Murray went through at Wimbledon on Friday.

Murray’s title defense appeared to be on shaky ground in the third round, particularly through a stressful stretch at Centre Court against Fabio Fognini, the 28th-seeded Italian who won their most recent encounter and had five set points to force this one to a fifth.

No telling whether the No. 1-ranked Murray, or his vocal backers, could have handled that test. Didn’t need to find out, because Murray was steady enough to grab the last five games and beat Fognini 6-2, 4-6, 6-1, 7-5 as the sunlight faded.

“The end of the match was tense,” Murray said, in his typically understated way.

The set he did drop was the first ceded so far this week by the Big 4: Roger Federer, Novak Djokovic, Nadal and Murray. That all-conquering quartet combined to win the past 14 Wimbledon championships — half by Federer, three by Djokovic, two apiece by Murray and Nadal. Ah, yes, Nadal. He is coming off a record 10th French Open title, claiming all 19 full sets he contested in Paris with as overpowering a performance as can be (one opponent quit because of injury in the middle of the second set).

Tack on the nine collected at the All England Club, including a 6-1, 6-4, 7-6 (3) victory over 30th-seeded Karen Khachanov on Friday, and Nadal’s set streak in majors equals the third-longest of the Open era.

In Monday’s fourth round, Nadal faces No. 16 Gilles Muller, who beat Aljaz Bedene 7-6 (4), 7-5, 6-4, while Murray meets unseeded Benoit Paire, a 6-2, 7-6 (3), 6-3 winner against Jerzy Janowicz. Other matchups: 2014 U.S. Open champion Marin Cilic against No. 18 Roberto Bautista Agut, and unseeded Kevin Anderson vs. No. 12 Jo-Wilfried Tsonga or No. 24 Sam Querrey, whose match was suspended because of darkness.