No. 2: Aroldis Chapman
Position: RP | Age: 29
Current Team: Cubs | Best Fit: Nationals
2016 Stats: 4–1, 1.55 ERA, 0.86 WHIP, 14.0 K/9, 36 Sv
Chapman lost nothing, performance-wise, in a season he started a month late due to his domestic violence suspension and that was split between the Yankees and the Cubs. In fact, he never before threw his fastball harder, averaging a career-best 100.4 mph with the pitch. At the same time, he showed better control than ever, dropping his walk rate from 4.5 to 2.8 per nine. An improving Chapman is a concerning thought to opponents, and while the Nationals should try to sign him to stabilize their long turbulent ninth innings, they'll have competition from his two 2016 teams, among others.