UPDATE 2-Tennis-Williams battles to fifth Miami title success

(adds quotes)

By Sandra Harwitt

MIAMI, Fla., April 5 (Reuters) - Serena Williams retained her Sony Ericsson Open title with a 6-1 5-7 6-3 win over fourth seed Jelena Jankovic in windy conditions on Saturday.

The eighth-seeded American, who is now tied with Germany's Steffi Graf for the record of five Miami titles, triumphed on her eighth match point with an overhead smash.

"I thought I had 15 match points," joked Williams, who has a 47-5 record in Miami. "It was a couple of shots she hit really well a couple of times."

Williams, who also won the Bangalore title this year, closed out the opening set with an ace on her second set point in the seventh game in just under half-an-hour.

Leading 6-1 3-0 with two breaks in the second set, Williams was in control but then hit a sticky patch and surrendered three breaks to Jankovic in the fourth, 10th and 12th games.

"I was up and on my way to glory and out of there in an hour," Williams said. "When someone has nothing to lose and starts playing the match like you have nothing to lose those are the most dangerous people in life and on a court."

Serving for the match at 5-4, Williams made four errors and lost her serve leaving Jankovic to go on and win the set.