Other than teammate Brandon Crawford, Duffy has to be considered one of the more pleasant fantasy surprises of 2015. Never a highly-regarded prospect, Duffy had to hit his way onto the 25-man roster in spring training. He did just that, and never stopped hitting, forcing the Giants' hand to make him their everyday third baseman following the release of Casey McGehee. Despite never hitting more than five home runs in the minors, Duffy finished the 2015 season with 12 to go along with 77 RBI and 12 stolen bases. While those numbers aren't astronomical, they definitely were useful to fantasy owners who likely picked him up for nothing. Unlike fellow Rookie of the Year finalist, Kris Bryant, Duffy doesn't have a very high ceiling. What we saw from him in 2015 is probably what we are going to see going forward, but there is definitely value in that.

Duffy was an 18th-round pick out of Long Beach State in 2012 and he has ascended the minor leagues with little fanfare. Since being drafted by the Giants, he's shown major strides in his ability at the plate, hitting .332/.398/.444 with a 10.1% walk rate and stealing 20 bases at Double-A Richmond in 2014 to earn a big-league callup as part of the revolving door at second base. Duffy was overmatched during his taste of San Francisco, but he's hitting enough in the minors to be considered a potential utility option in the not-so-distant future. With a 6-foot-2 frame, he may eventually develop more power, but it hasn't surfaced in the form of home runs yet. Duffy has been used primarily as a shortstop in the minors, and he may become a coveted trade target by teams looking for a utilityman capable of exceeding expectations. Look for Duffy to advance to Triple-A in 2015, where he'll likely spend most of the season unless injuries ravage the team's infield depth.