With the best record in the National League, the Chicago Cubs are looking to add more pieces to boost a playoff run.

With the MLB trade deadline fast approaching, the clock is ticking for the Chicago Cubs to improve their starting rotation. While Shota Imanaga and veteran Matthew Boyd deserve praise for their excellent seasons,

"The Cubs desperately want another starter at the deadline, targeting Mitch Keller of the Pirates, and would include outfield prospect Owen Caissie to make it work," Nightengale wrote on Sunday. Keller has previously been an All Star, and he would be a boost near the front of the Cubs' rotation.