The first serve has been taken to start this R32 Dallas, USA contest.
Game point for Chun Hsin Tseng. Can he convert it?
Chun Hsin Tseng serves and wins the game. The score is now 2:3.
Game point for Chun Hsin Tseng!
John Isner serves and wins the game. The score is now 2:2.
John Isner holds game point here.
Superb serve! Ace from John Isner.
Chun Hsin Tseng holds his serve to make the score 1:2.
John Isner saves one game point. Can he do it again?
Ace! Great serve by Chun Hsin Tseng.
Superb serve! Ace from John Isner.
Good hold from John Isner to make the score 1:1.
Game point for John Isner. Can he convert it?
Break point! Chun Hsin Tseng has the chance to break John Isner's serve!
Good hold from Chun Hsin Tseng to make the score 0:1.
Game point for Chun Hsin Tseng!
The tie-break has been won 7:5 by John Isner.
Chun Hsin Tseng saves set point but John Isner has another chance.
John Isner still has one set point despite Chun Hsin Tseng winning the last point.
Ace! Great serve by John Isner.
Game point for John Isner!
Superb serve! Ace from John Isner.
Good save from Chun Hsin Tseng but John Isner stills holds one game point.
Can John Isner close out the match? He holds match point here.
Superb serve! Ace from John Isner.
Game point for John Isner. Can he convert it?
Good hold from Chun Hsin Tseng to make the score 5:6.
John Isner wins the point, but Chun Hsin Tseng still has a game point.
Game point for Chun Hsin Tseng. Can he convert it?
Good hold from John Isner to make the score 5:5.
John Isner holds game point here.
John Isner holds his serve to make the score 3:3.
Ace! Great serve by John Isner.
Chun Hsin Tseng serves and wins the game. The score is now 4:5.
Game point for Chun Hsin Tseng!
John Isner holds his serve to make the score 4:4.
Game point for John Isner. Can he convert it?
Ace! Great serve by John Isner.
Good hold from Chun Hsin Tseng to make the score 3:4.
Chun Hsin Tseng holds game point here.
Crucial point coming up. John Isner holds set point.
John Isner wins the match after a tiebreak victory.
Chun Hsin Tseng serves and wins the game. The score is now 3:3.
Good hold from John Isner to make the score 2:1.
John Isner saves one game point. Can he do it again?
Game point for Chun Hsin Tseng. Can he convert it?
Good hold from John Isner to make the score 3:2.
Game point for John Isner!
Superb serve! Ace from John Isner.
Chun Hsin Tseng holds his serve to make the score 2:2.
Chun Hsin Tseng holds game point here.
John Isner holds game point here.
Ace! Great serve by John Isner.
Ace! Great serve by John Isner.
Chun Hsin Tseng serves and wins the game. The score is now 1:1.
Game point for Chun Hsin Tseng. Can he convert it?
Good point from Chun Hsin Tseng but still faces break point.
Chun Hsin Tseng wins this point, but John Isner can still break.
Break point to John Isner.
John Isner holds his serve to make the score 1:0.
Chun Hsin Tseng holds game point here.
Ace! Great serve by John Isner.
Game point for John Isner!
Chun Hsin Tseng wins the point, but John Isner still has a game point.
John Isner serves and wins the game. The score is now 6:5.
John Isner holds game point here.
Superb serve! Ace from John Isner.
Chun Hsin Tseng holds his serve to make the score 5:5.
Game point for Chun Hsin Tseng. Can he convert it?
Chun Hsin Tseng double faults and John Isner wins the point.
Good hold from John Isner to make the score 5:4.
Game point for John Isner!
Superb serve! Ace from John Isner.
Chun Hsin Tseng holds his serve to make the score 4:4.
Chun Hsin Tseng holds game point here.
John Isner has the chance to break Chun Hsin Tseng's serve. Can he take it?
Break point! John Isner has the chance to break Chun Hsin Tseng's serve!
Good save from John Isner but Chun Hsin Tseng stills holds one game point.
Game point for Chun Hsin Tseng. Can he convert it?
John Isner serves and wins the game. The score is now 4:3.
Game point for John Isner!
What a set between John Isner and Chun Hsin Tseng! Set number 2 will be decided by a tie-break.
Chun Hsin Tseng and John Isner cannot be separated. Set 1 is heading for a tiebreak.
It's too close to call as Set 1 goes to a tiebreak.