The "next man up" mentality has been a huge key for the Cubs this season and that starts in Iowa. To get a glimpse into how the I-80 shuttle has become so frutiful for the organization, we talked to Iowa Cubs play-by-play broadcaster Alex Cohen and analyst/reporter Elise Menaker.Marquee Sports Network is airing 14 days of Iowa Cubs action this summer, including on back-to-back days this week on June 10-11.Menaker and Cohen break down the culture at Principal Park with Marty Pevey's club and explains how big-leaguers like Jason Heyward and Alec Mills have provided wisdom during rehab stints.Speaking of wisdom, Cohen also explains Patrick Wisdom's journey from Iowa Cubs Opening Day starter to National League Player of the Week.Plus, who are some other players to keep an eye on in Iowa that may impact the Chicago team down the road?