Tipsarevic didn't face a break point in taking a 6-4, 6-4 decision over Hiroki Moriya. He lost 11 points in 10 games serving. Moriya was able to fight off 8-of-10 break points but Tipsarevic finished off one in each set to advance.
Nieminen defeated Philipp Petzschner 7-6 (7-1), 6-2. He amassed five breaks in 10 games receiving serve.
Also Wednesday Go Soeda stopped Daniel Udomchoke 6-4, 7-5 and Ivo Karlovic got by Marinko Matosevic on the tournament's final first-round matches.
Swim Week Miami Beach 2014 [PHOTOS]