The 23 Grand Slam winner Serena Williams defeated her elder sister, Venus Williams in two straight sets 6-1 6-2 on Friday.
Family loyalties were set aside,Serena was all business for the highly anticipated all-Williams clash under the lights on Arthur Ashe Stadium.
Serena and Venus were meeting for the 30th time – Friday’s contest marking the earliest the pair have clashed at a slam since their first professional encounter at the 1998 Australian Open.
Venus beat Serena then 16-year-old sister in straight sets that day in Melbourne but the seven-time major winner was no match for her younger sibling at Flushing Meadows, where Serena prevailed 6-1 6-2.
Serena next faces Estonia’s Kaia Kanepi, who ousted top seed Simona Halep in the first round.
Serena Williams  bt Venus Williams  6-1 6-2
Serena – 34/22
Venus – 14/18
Serena – 10/3
Venus – 1/0
BREAK POINTS WON
Serena – 4/10
Venus – 0/1
FIRST SERVE PERCENTAGE
Serena – 63
Venus – 67
PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE
Serena – 88/37
Venus – 48/45
Serena – 69
Venus – 44
Venus’s seven Grand Slam titles include a victory over Serena in the 2001 US Open final. But Serena has gone on to beat her in seven of eight major finals since then and now owns an 18-12 record over her elder sister.