There's plenty of time in between June and September to promote a fight. Oscar fought David Kamau on 14th June 1997 and then fought Hector Camacho on Mexican Independence weekend in September. Patrick Charpentier June the following year and then JCC on Independence Day weekend. Sturm and Hopkins in 2004 ffs.

So if Oscar really wanted to make the fight he could so it. It's Alvarez on Mexico's biggest day of the year. 90% of the PPV buys are going to know about it within days of the fight being announced. Putting the fight back till next year is a smart move though. Golovkin is starting to look like he's got a lot of miles on the clock and another fight or two wears him down even more. If I was Alvarez's promoter I'd be doing the same thing too.