Madison Keys will face Barbora Strycova in the Aegon Classic final after they beat Carla Suarez Navarro and Coco Vandeweghe respectively in Saturday's semi-finals.

Suarez Navarro took the first set against Keys, but the 21-year-old fought back to book her spot in Sunday's showpiece with a 3-6 6-3 7-6 (7-3) win.

Keys struggled against the Suarez Navarro serve in the opener, the Spaniard dropping only three service points and breaking at 3-2 to get off to a flying start in Birmingham.

But the American responded, breaking to love at 3-2 and serving out the second set without dropping a point on her serve.

The third set was a closer affair and a deciding tie-break was needed, with Keys playing aggressively on her forehand to force a mini-break at 3-2, then after Suarez Navarro floated a drop shot wide, the seventh seed took her first match point.

Meanwhile, Strycova – runner-up at the event in 2014 – came from behind to beat Coco Vandeweghe, who won last week's Ricoh Open, 2-6 6-4 6-4.

Vandeweghe's power was initially too much for Strycova, who was broken three times in a row in the opening set.

Strycova fell behind early in the second set too, but the Czech showed terrific grit to break twice and level the match.

A frustrated Vandeweghe lost focus in the decider and was tearful at a changeover after being broken, then Strycova converted her fourth match point to reach the final.