During the “Big Three” era in South Beach from 2010 to 2014, LeBron James, Dwyane Wade and Chris Bosh guided the Miami Heat to four straight NBA Finals and two championships. Two of those Finals matchups came against the San Antonio Spurs, with Miami winning in 2013 and losing in 2014.

Bosh, who was forced to retire from the NBA early due to blood clots, recently started a newsletter where he talks about the Heat's 2013 championship over the Spurs. In the latest edition of the newsletter, Bosh spent some time discussing how San Antonio is “the most difficult basketball town in the world.”

“There wasn’t much of a celebration, though, because we were heading to San Antonio, which very well might be the most difficult basketball town in the world. Let’s start with the stadium: The AT&T Center is next door to a barn. Seriously—the SA Rodeo is a half-mile away from where the Spurs play their games. It even shares a parking lot with their practice facility, where we had our shootarounds. So the minute I knew we were going to be facing them, one of my first thoughts was: That’s a few hours in the bug den. The horseflies from the stables like to migrate onto the court. It’s hard enough to stay focused in the run-up to a game. Imagine trying to do it with insects zipping around you,” the former NBA star said.

“And here’s some buzz (sorry) on the team itself: San Antonio’s not dirty, but they certainly are physical. There’s a reason Tim Duncan made that turnaround hook off the glass for 20 years: he’d gladly put an elbow in your face, throat and chest while doing it. That’s the Pop ethos: give it to ‘em nasty. The fans feed on that. They start wanting blood during warmups.”

The Heat won the 2013 NBA Finals in epic fashion, needing seven games to capture its second-straight title.

James was named Finals MVP after averaging 25.3 points, 10.9 rebounds and 7.0 assists, but it was Bosh who had arguably the second biggest play of the series in Game 6. He grabbed the offensive rebound off of a James missed triple and dished it out to Ray Allen in the corner.

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