They moved the fences in a few years back but it is still long. Ask Prince Fielder about his opposite field long outs.
It's not just about distance, but how the park plays. Prevailing winds, amount of foul territory, humidity, other factors. Oakland's ballpark is a launching pad in the daytime, the Grand Canyon at night.
Fenway is an interesting place. It used to be a great home run park for righties before they built up behind home plate. The wind that used to carry balls over the monster disappeared. It's a great place for batting average as the lack of foul territory turns a lot of outs in other parks into second chances. The right field power alley is among the longest in baseball, while the right field corner is among the shortest. It's a great place for left-handed hitters because the wall in left is easily reachable. It's a doubles paradise.
Iggy hit well his first year here and with his speed he should get a lot of infield singles. He is a ball player and I think he will be starting at SS for a long time.
He actually didn't. His OPS in Boston was .976 in June, .464 in July, .713 in August, and .551 in September. Overall it was .785 as a Red Sox, .654 as a Tiger.
Do not expect offense from him; you will almost certainly be disappointed. Enjoy him for what he does very, very well.
And another caution, the problem that kept him down last year wasn't new. This from the 2015 BP, "Shins were always an issue for Iglesias, and the Tigers knew this when they acquired him. But the pain wouldn't go away and further medical tests revealed longstanding fractures, forcing the team to shut him down. Should Iglesias' bionic shins hold up (and all reports point to "yes", his Vizquelian glove should keep him in the everyday lineup batting eighth."