See the 2015 US Open Tennis Championship Live Schedule and Results.The US Open is the only major that employs tiebreakers in every set of a match. If a match reaches a 6-6 tie in the final set (third set for women, fifth set for men) at the Australian Open, the French Open, or Wimbledon, the match continues until one player wins by two games. The sets played before the last set always employ tiebreakers.
You can also watch the US Open 2015 Live Streaming online, please click HERE!
source: http://www.scorespro.com/free-livescore/
You can also watch the US Open 2015 Live Streaming online, please click HERE!