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ROGER FEDERER

Seed: 1 Country: Switzerland

2018 Match Record: 25-3

2018 Singles Titles: 3

Grand Slam Titles: 20 — Wimbledon (‘03, ‘04, ‘05, ‘06, ‘07, ‘09, ‘12, ‘17), U.S. Open (‘04, ‘05, ‘06, ‘07, ‘08), Australian (‘04, ‘06, ‘07, ‘10, ‘17, ‘18), French (‘09)

Aces: After skipping clay-court season for second year in a row, won on grass at Stuttgart, then reached final at Halle before losing to Borna Coric, possible fourth-round opponent. Topspin: Even as 37th birthday nears, tough to count out Federer at a tournament he’s won more than any other man.

RAFAEL NADAL

Seed: 2 Country: Spain

2018 Match Record: 30-2

2018 Singles Titles: 4

Grand Slam Titles: 17 — Wimbledon (‘08, ‘10), U.S. Open (‘10, ‘13, ‘17), French (‘05, ‘06, ‘07, ‘08, ‘10, ‘11, ‘12, ‘13, ‘14, ‘17, ‘18), Australian (‘09)

Aces: Has not competed since winning record-extending 11th French Open title . ... Four of past five Wimbledon losses came against opponents ranked 100th or worse.

Topspin: Since reaching the final in five consecutive Wimbledon appearances from 2006-11, hasn’t been past the fourth round.

MARIN CILIC

Seed: 3 Country: Croatia

2018 Match Record: 27-9

2018 Singles Titles: 1

Grand Slam Titles: 1 — U.S. Open (‘14) Aces: Runner-up to Federer at two of the past four majors.

Topspin: When his serve and forehand are clicking, as big a threat as anyone to make a deep run.

JUAN MARTIN DEL POTRO

Seed: 5 Country: Argentina

2018 Match Record: 28-7

2018 Singles Titles: 2

Grand Slam Titles: 1 — U.S. Open (‘09) Aces: Back at career-best No. 4 in rankings after semifinal run at Roland Garros. Topspin: Biggest forehand in the game could carry him far at All England Club.

JOHN ISNER

Seed: 9 Country: United States 2018 Match Record: 16-11

2018 Singles Titles: 1

Grand Slam Titles: 0

Aces: Ranks 2nd in 2018 in aces and percentage of service games won. Topspin: Never has put together a second-week run at the place where he won the longest tennis match in history in 2010.