Arcia, Lopez and Clark were originally signed or drafted by the Brewers (Clark was the team's first-round Draft pick last year). Phillips and Hader were among the four prospects acquired from Houston in July for Carlos Gomez and Mike Fiers.
The annual ranking of baseball's Top 100 Prospects is assembled by MLBPipeline.com Draft and prospect experts Jonathan Mayo, Jim Callis and Mike Rosenbaum, who compile input from industry sources, including scouts and scouting directors. It is based on analysis of players' skill sets, upsides, proximity to the Majors and potential immediate impact to their teams.