<p>Alexander Zverev recovered from two sets down to defeat Spain's Pablo Carreno Busta in a scrappy encounter and reach the US Open final on Friday.</p>.<p>The German fifth seed beat the 20th seed 3-6, 2-6, 6-3, 6-4, 6-3 in 3hr 23min inside Arthur Ashe Stadium to set up his first-ever Grand Slam final.</p>.<p>He will play either second seed Dominic Thiem or third seed Daniil Medvedev in Sunday's showpiece.</p>.<p>It marked the first time in the 23-year-old Zverev's career that he came from two sets down to win.</p>.<p>"I actually looked at the scoreboard when I was down two sets to love," Zverev said.</p>.<p>"I was like, 'I can't believe it. I'm playing in a semi-final, I'm supposed to be the favourite and I have no chance, I'm playing that bad.</p>.<p>"So I knew I had to come up with better tennis and I knew that I had to be more stable."</p>.<p>Zverev made 36 unforced errors in the first two sets compared to just 12 for Carreno Busta as the nerves of the occasion seemed to get the better of him.</p>.<p>Double fault followed double fault and a string of misplaced, nervy forehands allowed Carreno Busta to build a sizable lead.</p>.<p>But Zverev began to seriously cut down on his mistakes in the third set, upping his service game and taking control of rallies with more powerful, accurate groundstrokes.</p>.<p>It continued to be a nervy, error-strewn affair, though, with both players appearing overwhelmed at times with coming so close to reaching their first tennis major final.</p>.<p>Zverev hit eight double faults overall to Carreno Busta's one. Zverev recorded 57 unforced errors to 44 for Carreno Busta.</p>.<p>But the tall German smashed way more winners, 71 to 37.</p>.<p>"I'm through to my first Grand Slam final and that's all that matters," Zverev said.</p>.<p>"I couldn't be happier, but there's still one more step to go for me," he added.</p>.<p>Zverev had reached his first Grand Slam semi-final at the Australian Open this year.</p>.<p>He now becomes the first German man to reach the final of a tennis major since Rainer Schuttler at the 2003 Australian Open.</p>.<p>This year's US Open field has been depleted by the absence of Roger Federer and Rafael Nadal.</p>.<p>The tournament was blown wide open by the disqualification of world number one and heavy favourite Novak Djokovic in the last 16 for hitting a line judge with the ball.</p>.<p>It means Sunday's final will see a first-time Grand Slam champion for the first time since Croatian Marin Cilic won at Flushing Meadows in 2014.</p>.<p>It also means there will be a Grand Slam champion other than Djokovic, Nadal or Federer for the first time since Switzerland's Stan Wawrinka won the third of his tennis majors at the US Open in 2016.</p>
<p>Alexander Zverev recovered from two sets down to defeat Spain's Pablo Carreno Busta in a scrappy encounter and reach the US Open final on Friday.</p>.<p>The German fifth seed beat the 20th seed 3-6, 2-6, 6-3, 6-4, 6-3 in 3hr 23min inside Arthur Ashe Stadium to set up his first-ever Grand Slam final.</p>.<p>He will play either second seed Dominic Thiem or third seed Daniil Medvedev in Sunday's showpiece.</p>.<p>It marked the first time in the 23-year-old Zverev's career that he came from two sets down to win.</p>.<p>"I actually looked at the scoreboard when I was down two sets to love," Zverev said.</p>.<p>"I was like, 'I can't believe it. I'm playing in a semi-final, I'm supposed to be the favourite and I have no chance, I'm playing that bad.</p>.<p>"So I knew I had to come up with better tennis and I knew that I had to be more stable."</p>.<p>Zverev made 36 unforced errors in the first two sets compared to just 12 for Carreno Busta as the nerves of the occasion seemed to get the better of him.</p>.<p>Double fault followed double fault and a string of misplaced, nervy forehands allowed Carreno Busta to build a sizable lead.</p>.<p>But Zverev began to seriously cut down on his mistakes in the third set, upping his service game and taking control of rallies with more powerful, accurate groundstrokes.</p>.<p>It continued to be a nervy, error-strewn affair, though, with both players appearing overwhelmed at times with coming so close to reaching their first tennis major final.</p>.<p>Zverev hit eight double faults overall to Carreno Busta's one. Zverev recorded 57 unforced errors to 44 for Carreno Busta.</p>.<p>But the tall German smashed way more winners, 71 to 37.</p>.<p>"I'm through to my first Grand Slam final and that's all that matters," Zverev said.</p>.<p>"I couldn't be happier, but there's still one more step to go for me," he added.</p>.<p>Zverev had reached his first Grand Slam semi-final at the Australian Open this year.</p>.<p>He now becomes the first German man to reach the final of a tennis major since Rainer Schuttler at the 2003 Australian Open.</p>.<p>This year's US Open field has been depleted by the absence of Roger Federer and Rafael Nadal.</p>.<p>The tournament was blown wide open by the disqualification of world number one and heavy favourite Novak Djokovic in the last 16 for hitting a line judge with the ball.</p>.<p>It means Sunday's final will see a first-time Grand Slam champion for the first time since Croatian Marin Cilic won at Flushing Meadows in 2014.</p>.<p>It also means there will be a Grand Slam champion other than Djokovic, Nadal or Federer for the first time since Switzerland's Stan Wawrinka won the third of his tennis majors at the US Open in 2016.</p>