Well you can watch all the fight week events online:
All Fight Week events will stream live via Sports.SHO.com, the SHOWTIME Sports® YouTube channel, and via USTREAM.TV embeddable player.
Tuesday, Sept. 10 (5 p.m. ET/ 2 p.m. PT): Grand Arrivals
Wednesday, Sept. 11 (4 p.m. ET/ 1 p.m. PT): Main Event Press Conference with Floyd Mayweather and Canelo Alvarez airing live on CBS Sports Network.
Thursday, Sept. 12 (4 p.m. ET/ 1 p.m. PT): Undercard Press Conference with Danny Garcia and Lucas Matthysse airing live on CBS Sports Network.
Friday, Sept. 13 (6 p.m. ET/ 3 p.m. PT): "Weigh-In Live" airing live on SHOWTIME and CBS Sports Network.
Saturday, Sept.14 (8 p.m. ET/ 5 p.m. PT): "Countdown Live" with interviews and special pre-fight features airing live on SHOWTIME.
I know Top Rank PPV's can be ordered and streamed online.
Also the whole "UFC taking over" is pure ignorance.
SO you want to order a ppv but online? I don't think they offer that, but good luck.
God dam their pretty retarded, at this time of age they don't allow PPV online, guess they don't like money. Reason why UFC is overtaking.