The Family Circle Cup trophy waited patiently for a champion to step forward in Sunday's final.
Serena Williams opened the championship final of the Premier-level event with a love service game.
Jelena Jankovic fell behind 0-30 in the next service game but hung on to hold serve for 1-all.
Williams had chances to go ahead but Jankovic kept hanging tough, eventually taking the set, 6-3.
Williams' sister, Venus, and her coach, Patrick Mouratoglou, watched on as the World No.1 rallied.
Williams was even on winners to errors in the first set but stepped forward in a big way from there.
Jankovic was in trouble as Williams' differential in the second and third sets combined was +14.
Williams' play in the second and third sets was just too tough and she came out on top, 36 60 62.
Jankovic thanked the crowds and even joked, 'Maybe next time Serena can play a little worse.'
Williams after winning her third Family Circle Cup title, having also won here in 2008 and 2012.
Williams came away with her 49th WTA title, just one away from 50 - only nine women have passed 50.
Williams has also won 71 of her last 75 matches, a stretch that began at the start of last April.
Jankovic has her own good stretch going, winning 14 of her last 17 matches since mid-February.
Williams will now embark on her 131st career week at No.1 in the world, the sixth-most all-time.
Williams posed with her trophy at Rainbow Row, a series of colorful historic houses in Charleston.