By in large, the Dallas Cowboys 2018 season was considered a success. Following a 3-5 start, Dallas won the NFC East and lost to the eventual NFC champion Los Angeles Rams in the divisional round of the playoffs.As the case always is in sports, winning elicits expectations. The presumption is for Jason Garrett and the Cowboys to build upon what took place last season.Garrett is in the final year of his contract and based on Jerry Jones' decisions, the owner's in prove-it mode for 2019.