Cameron Norrie came out on top in an all-British meeting against Jack Draper to reach the Miami Open third round.

Norrie will face France's Hugo Gaston next as he bids to reach the fourth round for the first time.

"I had a little bit of nerves - I was a big favourite against a young Brit. I'm excited to see how he's going to do in the future," Norrie told Amazon Prime.

The two last met at Queens in July, where Norrie also won in straight sets.

However, Draper, who struggled with heat exhaustion at last year's Miami Open, has won three titles on the Challenger tour this season and registered a first-round win over veteran Gilles Simon.

The 20-year-old fought back from a break down in the opening set before Norrie upped his aggression at the net to take it on a tie-break.

Norrie's experience showed in the second as he staved off three break points in his opening service game before breaking Draper at the first chance.

Draper was given a warning for ball abuse after being broken but continued to pressure Norrie's serve, forcing his opponent to save another four break points in the next game.

However, Norrie was able to close out victory to move closer to breaking into the top 10.

"It's not easy against Jack. He's such a big talent and hits the ball big on both sides," Norrie added.

"The court surprised me a little bit as it was very slow out there. I managed to play the bigger points a little bit better than he did and that was the difference in the end."

His next opponent, Gaston, beat 20th seed and 2018 champion John Isner 7-6 (7-5) 6-4.

Nick Kyrgios thrashed world number seven Andrey Rublev 6-3 6-0 in just 52 minutes.

The Australian went 2-1 down in the first set before winning 11 of the next 12 games to race past the Russian.

The ATP said on Friday that Kyrgios had been fined $25,000 for almost hitting a ball boy with a racquet at Indian Wells earlier in March.

Kyrgios smashed his racquet into the court after losing the deciding set in his quarter-final against Rafael Nadal. It narrowly missed a ball boy who had to take evasive action at the back of the court.

The 26-year-old has been fined $20,000 for unsportsmanlike conduct and $5,000 for an audible obscenity.

Last year's finalist and ninth seed Jannik Sinner saved three match points as he came past world number 71 Emil Ruusuvuori 6-4 3-6 7-6 (10-8).

German second seed Alexander Zverev also advanced with a 6-4 3-6 6-3 win over Croatia's Borna Coric, who is making his return after a lengthy injury lay-off.