The Cubs were back in Chicago for a quick four-game homestand against one of the worst teams in the National League, but the North Siders only managed to win two of the games – barely. The series ended on a bad note with Anthony Rizzo getting in the face with home plate umpire Angel Hernandez, but the weekend in general shined a light on some of the biggest concerns surrounding this Cubs team.Kelly Crull and Tony Andracki discuss the issues with Jon Lester, the Cubs bullpen and how badly the team needs its injured stars – Kris Bryant, Yu Darvish, Brandon Morrow – back and performing at their best as the season moves to the Dog Days of August.