Next Generation player Borna Coric is one match win away from reaching his second ATP World Tour final.

Third seed Coric hit 12 aces to beat Paul-Henri Mathieu 6-7(6), 6-3, 6-4 in three hours and seven minutes on Friday at the Grand Prix Hassan II. Mathieu, who won the 2007 title when the tournament was played in Casablanca, saved 11 of 14 break point opportunities.

“It was a very tough match, obviously,” said Coric. “I didn’t feel confident as I had yet to play a match here, so I was a little nervous. I was extremely happy how I played, but I was a little unlucky in the tie-break when I didn’t play well on the important points. I just have to keep fighting.”

The 19-year-old Coric, who reached the Aircel Chennai Open final (l. to Wawrinka) in January, goes on to face eighth seed Jiri Vesely, who upset top seed Guillermo Garcia-Lopez 6-4, 7-6(2). The 22-year-old Czech saved all three break points he faced in the one hour, 52-minute victory. Both Coric (2014) and Vesely (2013) are past winners of the ATP Star of Tomorrow presented by Emirates.

Earlier in the day, 35-year-old Albert Montanes defeated Facundo Bagnis 6-1, 7-5 in 75 minutes. Bagnis was contesting his first tour-level quarter-final.

Montanes will next face fourth seed Federico Delbonis, who recorded his 13th win of the year to overcome seventh seed Pablo Carreno Busta 7-5, 6-2.

Argentines Reach Doubles Final

Guillermo Duran and Maximo Gonzalez advanced to the title match when they defeated third seeds Mate Pavic and Michael Venus 5-7, 6-4, 10-7 in one hour and 46 minutes. They will challenge Marin Draganja and Aisam-Ul-Haq Qureshi on Saturday.

Five-time Houston champions Bob Bryan and Mike Bryan beat young Americans Reilly Opelka and Tommy Paul 6-4, 6-3 to move into the semi-finals of the Fayez Sarofim & Co. US Men’s Clay Court Championship on Thursday. The top seeds broke the 18 year olds four times (4/5) and secured the win in 58 minutes.

The Bryans, who are looking for their first title since Montreal 2015, survived two match points in a first-round win over countrymen Denis Kudla and Donald Young. They will face Americans Steve Johnson and Sam Querrey in the final four. Johnson and Querrey, the fourth seeds in Houston, saw off Chris Guccione and Andre Sa 6-3, 2-6, 10-8.

Dragana/Qureshi Into Marrakech Final

Unseeded duo Marin Draganja and Aisam-Ul-Haq Qureshi advanced to the Grand Prix Hassan II doubles final by defeating Rohan Bopanna and Denis Istomin 7-6(5), 7-6(5). The two teams combined to save all 15 break points in the 94-minute match. Draganja and Qureshi only won one more point than their opponents (77-76).

Taking part in the other semi-final will be Guillermo Duran and Maximo Gonzalez, who upset second seeds Marc Lopez and David Marrero 6-4, 6-4. They will face third seeds Mate Pavic and Michael Venus, 6-4, 6-3 winners over Albert Ramos-Vinolas and Jiri Vesely.

Fourth seed Jack Sock defeated qualifier Matthew Barton 6-2, 7-6(5) on Thursday to move into the quarter-finals of the Fayez Sarofim & Co US Men’s Clay Court Championship. The defending champion won 80 per cent of first serve points and secured his sixth consecutive win in Houston in 75 minutes. He has not lost a set in Houston since the first round last year (d. Souza).

“It’s never easy playing a guy you’ve never faced before and who you haven’t seen,” Sock said of Barton. “He’s very athletic and has a pretty big serve. He hit a couple at 138mph. I didn’t realise he had that massive of a serve.

“I’ve been here for a week practicing, so I was a bit anxious to get on the court and play my first match. I felt happy with my one-two punch. I dictated well with my forehand.”

Twelve months ago, Sock earned his maiden ATP World Tour title by defeating countryman Sam Querrey in the final as unseeded player. Now No. 25 in the Emirates ATP Rankings, Sock improved to 8-6 on the year and earned his first clay-court win of 2016. He is looking to reach his second final of the season, having retired due to illness against Roberto Bautista Agut in Auckland in January.

Wild card Tim Smyczek dismissed fellow American Donald Young 6-2, 6-4 in 56 minutes to reach his second quarter-finals of the year (l. to Querrey in Delray Beach). A resurgent Smyzcek, who only had five tour-level wins last year (5-13), is already 6-5 in 2016.

Awaiting the Milwaukee native is Feliciano Lopez, who eliminated Lukas Lacko 7-6(4), 6-1. The third seed won all but four points on his first serve (27/31) and improved to 2-0 in the FedEx ATP Head2Head rivalry against the Slovak. The left-handed Spaniard topped Smyczek 7-5, 6-4 in their lone past tour-level meeting (2014 Toronto).

Jiri Vesely had to battle for more than three hours on Thursday to reach the Grand Prix Hassan II quarter-finals.

The eighth seed recorded just his third match win of the season by overcoming qualifier Nikola Mektic 6-7(4), 6-3, 7-6(5). Vesely hit 15 aces to Mektic’s 10.

“It was a tough match today,” said Vesely. “I didn’t play with a lot of confidence because I only won one match before the beginning of this tournament. I’m very happy about this victory. I kept fighting and never gave up. It was a very important win for me.”

Vesely will next play top seed Guillermo Garcia-Lopez, who broke a three-match losing streak against Nicolas Almagro in a 1-6, 6-3, 6-4 victory. Garcia-Lopez won the 2014 title (d. Granollers) when the ATP World Tour 250 tournament was played in Casablanca.

Seventh seed Pablo Carreno Busta lost just five of his first service points in a 6-3, 7-6(5) win over Denis Istomin.