Wimbledon Briefing - US & Canadian Results: Danielle Collins & Emma Navarro bring early joy, Shelton and Paul fight for third round spot

Day Four at Wimbledon features extensive American and Canadian action in the main draw, as players vie for a spot in the third round. Emma Navarro and Danielle Collins brought early joy for the North Americans, while Brandon Nakashima claimed victory in an all-American clash against Reilly Opelka.

Later in the afternoon, a couple of key American names are still to play, with Tommy Paul facing Sebastian Ofner and Ben Shelton against Rinky Hijikata. Meanwhile, former Australian Open champion Sofia Kenin suffered a second-round defeat to Jessica Bouzas Maneiro.

World No. 10 Emma Navarro secured another straightforward win at Wimbledon, advancing confidently to the third round. This time she faced former top-10 player Veronika Kudermetova, who couldn't pose a real challenge. Navarro comfortably took the victory 6-1, 6-2 in just one hour and 14 minutes.

The American wasn't overly aggressive but didn't need to take many risks to win. Kudermetova hit 15 winners to Navarro's 10, but the significant difference lay in unforced errors, with 32 from the Russian compared to just 5 from Navarro. In the third round, Navarro will face defending champion Barbora Krejcikova, who just defeated American Caroline Dolehide in three sets and looks confident in her title defense.

Another surprise unfolded in the men's draw with the elimination of 25th seed Felix Auger-Aliassime in four sets. His opponent, Jan-Lennard Struff, a former top-20 player, is difficult to beat when his serve is on. The Canadian started well, taking the first set in just over half an hour, converting both of his break opportunities and capitalizing on 11 unforced errors from his opponent (who also had a poor 43% first-serve percentage).

However, in the second set, Struff refined his serve and consistently stayed ahead. The German saved four set points in the second-set tie-break and then dominated the crucial moments to secure a hard-fought 3-6, 7-6(11-9), 6-3, 6-4 victory. The 35-year-old has guaranteed a high-profile clash against none other than two-time defending champion Carlos Alcaraz.

Brandon Nakashima claimed victory in the all-American duel against Reilly Opelka in a four-set battle. The former Next Gen ATP Finals champion showed solidity on the grass courts, serving effectively and even securing several breaks against one of the best servers of the last decade. Nakashima hit 12 aces to Opelka's 24 but was more effective on both first and second serves.

Opelka couldn't convert either of his 2 break points throughout the match, while Nakashima took 4 of 10 break opportunities. The 23-year-old read the match well, maintaining his serve even when Opelka offered no return chances, and performed better in key moments to close out the 7-5, 6-2, 6-7(6-8), 6-3 victory. In the third round, he will face the winner between Lorenzo Sonego and Nikoloz Basilashvili in a section of the draw that appears clear of top names, presenting a great opportunity for him.

Danielle Collins secured a straightforward victory in the second round of Wimbledon against a lesser-known opponent, Slovenian Veronika Erjavec (No. 171), who came from qualifying and surprised 26th seed Marta Kostyuk in her debut. However, Erjavec couldn't replicate her excellent tennis from the past week, and Collins advanced comfortably with a 6-4, 6-1 win.

The American was truly impressive on serve, winning 88% of her first-serve points and 87% of her second-serve points. She conceded only 5 points on her serve across 9 service games. In the first set, Erjavec managed to keep parity until 4-4, but then "Danimal" took control, winning 7 consecutive games before closing out the victory 6-4, 6-1. In the third round, she will reunite with Iga Swiatek, against whom she has a 2-7 head-to-head record, although their last encounter—in Rome two months ago—resulted in a win for the 31-year-old American.

The road has ended for 28th seed Sofia Kenin, further clearing the bottom half of the draw. After Coco Gauff's first-round exit, Kenin seemed to have a clear path to the second week of the tournament. However, she ran into a formidable Bouzas Maneiro, who reaches the third round of Wimbledon for the second consecutive year.

The Spaniard capitalized on her opponent's service troubles in the first set, securing a couple of breaks in contested games. Bouzas converted 2 of her 7 break points and took the first set 6-1. In the second, she held the lead for much of the set, and although Kenin recovered—saving two match points at 3-5 and 4-5—Bouzas Maneiro finally triumphed in the tie-break: 6-1, 7-6(4), advancing to the third round. She will face Ukrainian Dayana Yastremska and is on the verge of entering the top 50 for the first time in her career if she secures another win.

[15] Jakub Mensik (CZE) def. Marcos Giron (USA): 6-4, 3-6, 6-4, 7-6(4)

Jan-Lennard Struff (GER) def. [25] Felix Auger-Aliassime (CAN): 3-6, 7-6, 6-3, 6-4

[29] Brandon Nakashima (USA) vs Reilly Opelka (USA): 7-5, 6-2, 6-7(6), 6-3

Tommy Paul (USA) vs Sebastian Ofner (AUT)

[10] Ben Shelton (USA) vs Rinky Hijikata (AUS)

Emma Navarro (USA) def. Veronika Kudermetova: 6-1, 6-2

Elisabetta Cocciaretto (ITA) def. Katie Volynets (USA): 6-0, 6-4

Hailey Baptiste (USA) def. [LL] Victoria Mboko: 7-6(6), 6-3

Danielle Collins (USA) def. [Q] Veronika Erjavec: 6-4, 6-1

[17] Barbora Krejcikova (CZE) def. Caroline Dolehide: 6-4, 3-6, 6-2

[8] Iga Swiatek (POL) def. Caty McNally (USA): 5-7, 6-2, 6-1

Jessica Bouzas Maneiro (ESP) def. [28] Sofia Kenin (USA) vs : 6-1, 7-5