American Frances Tiafoe is a lot more confident since winning his first title at Delray Beach a few weeks ago. The 20-year-old says improving his serving and his play in the big moments of a match has led to his recent run.

Two days ago at the Miami Open, he edged Kyle Edmund 7-6 (4), 4-6, 7-6 (5).

“It's huge. It's everything,” the No. 63 Tiafoe said. “Delray taught me a lot. I beat some quality players back-to-back-to-back, which I've never done. I've played so many matches in my career so far where I played unbelievable, came up just short. Now I'm feeling really comfortable when it gets tight. I actually embrace it, I want it. It's fun for me. I'm just trying to ride this wave as long as I can.”

Tiafoe wins his first career title in Delray Beach Open:


Tiafoe will next face 2010 Wimbledon finalist Tomas Berdych.

Tiafoe says that his serving was pretty lousy in 2017, but following a first-round defeat against Juan Martin del Potro during the Australian Open, he went home and worked on it. He now says it's "probably the best I ever served."

“Yeah, serve was terrible,” Tiafoe said. “Done a lot of work on it. Yeah, you know, did some tweaks on it in the off-season. I felt I was serving terrible in Australia. Before the New York 250, I tweaked it again. Feeling good since. I've been staying on it.”


Frances Tiafoe credits his recent success to his improved serve

Frances Tiafoe credits his recent success to his improved serve

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