Troy transfer Javan Johnson commits to Iowa State

Alex Rodriguez’s worst ever performance at Fenway Park wasn’t when he tried to fight Jason Varitek. It came Sunday night, when his verbal diarrhea rendered ESPN’s “Sunday Night Baseball� telecast nearly unwatchable. In theory, the prospect of A-Rod calling a big Red Sox-Yankees matchup is infinitely interesting. He was one of the most polarizing figures in the history of the rivalry, and initiated two of the most indelible moments during the Red Sox’ 2004 World Series run: the aforementioned Varitek brawl, and slapping the ball out of Bronson Arroyo’s hand in the ALCS. But on Sunday night, viewers didn’t hear many remarks from A-Rod about his past. When they played the clip of him trying to rip