After 4 early exits during the North American swing, Ryan Harrison scored a very important win over the 5th seed Kevin Anderson, by 6-3 1-6 7-6 in 2 hours and 1 minute, reaching his first quarter-final since Atlanta when he played in the title match. Kevin fired 24 aces and faced just 3 break points in the entire match, but it wasn't enough to finish on the winning side, despite the dominant performance in the second set and 7 break points. Ryan managed to fend off 5 of those, playing on the same level with his rival in the decided and toppling him in the tie break. Anderson won their previous 2 matches but Ryan was the one who was more focused in the tie break, unlike in the first 2 they played. In the next round, Ryan will face the top seed Marin Cilic on Friday. Ryan saved a break point in the opening game with a service winner and again in game 5 when Anderson sent a forehand long.
South African was punished in the following game, wasting a game point and getting broken to fall 4-2 behind. Ryan played great on serve in his last 2 service games to grab the set by 6-3, using the fact that Kevin made too many errors. The second set started with break chances for both players, and it was Anderson who stepped in to take the last 5 games and the set by 6-1. He started to dictate the points with his strong forehands and he broke Ryan in games 4 and 6 to take full control. They saved the best for the final set, with 12 easy holds without deuces or break points, and the match had to be resolved in the tie break. Harrison scored the first mini-break with a great backhand cross court winner for a 2-0, and Kevin sent a routine forehand long to drop another serve. Ryan won another point on the return for a 6-1 and he sealed the deal with a service winner in the 9th point, advancing to his first ATP 500 quarter-final since Acapulco 2015.
The top seed Marin Cilic earned a solid 6-3 6-4 win over the world number 214th Yasutaka Uchiyama, in 73 minutes. Japanese fought well, playing against just 2 break points, but Marin converted both to seal the deal in straights, losing just 13 points in 10 service games and saving 1 break point in the penultimate service game to avoid further struggle. There were 8 easy holds in the opening set but it was Cilic who scored the only break in game 8 thanks to a volley winner, grabbing the last 3 games of the set for a 6-3. Croat had the momentum and he broke again at the start of the second set when Uchiyama sent a forehand long, and he only had to serve well in the rest of the set to wrap up a win. Everything worked according to the plan for Marin until game 8, when his forehand landed long to give his opponent the first break point. He saved it with a service winner and the match was firmly in his hands after a massive forehand in game 10 for his 10th quarter-final of the season.