Serena powers into Miami final
Serena Williams of the United States serves against Maria Sharapova of Russia during their semi final round match during day 11 at the Sony Open at Crandon Park Tennis Cente on March 27, 2014 in Key Biscayne, Florida - by Clive Brunskill
Williams extended her dominance over the fourth-seeded Russian and now leads their career head-to-head 16-2.
The American has won 15 straight matches against Sharapova, whose two victories in their rivalry came back in 2004.
In the final Williams will be gunning for a second straight Miami crown and a seventh overall.
She'll face the winner of Thursday night's match between world number two Li Na of China and 10th-seeded Slovakian Dominika Cibulkova.
Li has won all six of her meetings with Cibulkova, including January's Australian Open final and a quarter-final clash at Indian Wells this month.
For Sharapova it was another disappointing finish in Miami, where she has reached five finals but never lifted the trophy.