Serena Demonstrated a wide variety of skills in Winning Cincinnati 2015.
As usual, Serena started slow, went behind 1-3, before winning 5 games in a row to take the first set. How did she do it? a combination of skill, brains, strategy and athleticism.

Serena was superior with The Return of serve, along with the serve, along with Points won at the net. There were moments of brilliance from Halep, but the result was never in doubt once Serena started playing her game. Serena won Cincinnati 2015 while not playing her best.
As with true champions, Serena finds a way to win. This is because Serena doesn't rely on one aspect of her game. Serena has more weapons in her game than the rest of the WTA put together.