​Chicago Cubs announcers Len Kasper, left, and Jim Deshaies record a pregame show for WGN-TV before a 2014 game at Wrigley Field in Chicago. (Chris Sweda/Chicago Tribune/Tribune News Service via Getty Images) Although lacking the drama of their historical post season battles, the three game series forthcoming on Chicago’s south side holds heightened significance should the Astros hope to remain relevant this baseball season.   Len Kasper calls games for the White Sox and he joins us exclusively at The Crawfish Boxes to preview the weekend ahead.  Q: How personally fulfilling has this season been for you after witnessing the rebuild?A: Super, super fun for Darrin Jackson and me. I recall a few weeks ago when the Sox were like 31-28 and we had the note that 2 years ago they were 31-109 I had to do a double take. I called all of those games and lived it but it still doesn’t seem real. Having said that, this season has really put all those struggles in the rear view mirror. It doesn’t matter anymore. This team is good and the way they play is FUN and we are living in the moment. They play hard, they slug, they claw from behind, they enjoy each other. There is something really special about this group that is hard to quantify, but when you see it, you acknowledge that it matters. Also, our fans adore this team. They love the winning but they love how this team plays just as much.Q: How huge has a guy like Sean Newcomb been?A: I think it’s fair to say he’s been the most valuable pitcher on the roster. He has done a little bit of everything which is where the league is now headed — closers, set-up men, etc. are becoming a thing of the past. Pitchers are just out-getters and in Newcomb’s case, you feel comfortable using him in any situation. What a great under-the-radar addition he’s been. One underrated thing about the bullpen is most of the guys are multi-inning options: Newcomb, Taylor, Hudson, Murphy, Richards, et al.Q: Not to put it on one guy, but if Sean Burke continues the strong outings, you must feel pretty upbeat about the remaining two months of the season, correct?A: Burke has pitched like an ace over the last several weeks. The stuff has always been there but it has been about strike-throwing and he is now doing that. One walk in his last 3 starts and a ton of strikeouts. I kinda hate the “this guy is a 1, this guy is a 3” conversation, BUT if we are gonna do that, the Sox have been looking for a “1” and right now, it’s Sean Burke. It’s interesting, they opened for him a few times earlier this season and he always pitched really well in that bulk relief role. But I’m guessing he didn’t love it and the best way to not be in that position is to pitch like he has. I wouldn’t expect an opener to be in play for him again for awhile.Q: Biggest need at the deadline? Will it be another arm or a combination of things best guess?A: These are questions for Chris Getz, but I just think the “you can never ha