Acquired by the Royals in the Zach Greinke trade before the 2011 season, righthander Jeremy Jeffress is another prototypical good thing/bad thing pitching prospect. Jeffress lights up radar guns with three-figure readings almost every night (that's a good thing), but needs work on his control (bad thing). His 50 game substance abuse suspension in 2009 can be overlooked (marijuana isn't exactly a performance enhancer), but it's tougher to ignore his lack of solid secondary pitches. If the Royals need a righthander with near triple digits in their bullpen this year, he could see action in the same way he did in 2011, but the more conservative minds will want to keep developing his arsenal for a better showing in 2013.