The match had to be paused and postponed several times due to heavy rain, but nothing stopped the 24-year-old from winning.
Sinner, ranked second in the world, recently won the Indian Wells major tournament in the United States.
New victory for Sinner - wins Miami Open
The winning streak continues for tennis star Jannik Sinner. The Italian beat Jiri Lehecka of the Czech Republic in straight sets to win the Miami Open in the United States.
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