Every club has made at least one terrible signing, trade or decision in the past five years. We rank each from least to most damaging.

Yahoo Sports MLB writers Hannah Keyser and Zach Crizer look at the success of Arizona Diamondbacks pitcher Zac Gallen, his All-Star chances, and how last year's Cy Young voting keeps him motivated.

Previously anchored by All-Star Zac Gallen and supplemented by Merrill Kelly, the team now boasts the arm of a Cy Young winner. The four-time All-Star signed a six-year, $210 million deal with the ...