Can someone tell me that answer to this tennis question?

Question

Rafael Nadal and Roger Federer are tied 6-6 in the final set. In order for the set and match to be completed, they will play a tiebreaker. How many points will it take to decide a winner?

Answer 1

Looks like an extra inning game to me, maybe someone will end it in the 10th.

Answer 2

i. A player who first wins seven points shall win the game and the set provided he leads by a margin of two points. If the score reaches six points all the game shall be extended until this margin has been achieved. Numerical scoring shall be used throughout the tie-break game.
ii. The player whose turn it is to serve shall be the Server for the first point. His opponent shall be the Server for the second and third points and thereafter each player shall serve alternately for two consecutive points until the winner of the game and set has been decided.
iii. From the first point, each service shall be delivered alternately from the right and left Courts, beginning from the right Court. If service from a wrong half of the Court occurs and is undetected, all play resulting from such wrong service or services shall stand, but the inaccuracy of station shall be corrected immediately it is discovered.
iv. Players shall change ends after every six points and at the conclusion of the tie-break game.
v. The tie-break game shall count as one game for the ball change, except that, if the balls are due to be changed at the beginning of the tie-break, the change shall be delayed until the second game of the following set.

Now, if they were playing doubles...

In doubles the procedure for singles shall apply. The player whose turn it is to serve shall be the Server for the first point. Thereafter each player shall serve in rotation for two points, in the same order previously in that set, until the winners of the game and set have been decided.

Answer 3

I think they're going to have to use Pete Sampras as a pinch hitter. If he can single or draw a walk, they might use Andre Agassi as a pinch runner. In that case, Agassi would steal second and score on an RBI single by John McEnroe.