The 28-year-old infielder spent much of his career in the Mets system, but he ventured across three organizations in 2016 and could only muster a .223 batting average with three different minor league teams. He walks at incredibly high rates, but due to his meager past production, Muno offers little more than organizational depth moving forward.
The 24-year-old is turning heads in camp by launching moonshots out of the park. Castellanos hit a career-best 18 home runs last season despite playing in only 110 games due to a hand injury that limited his availability in the second half. He's improved his home run output in each of his four MLB seasons, so 30 home runs is not out of the question if Castellanos can stay healthy. He should be a fixture in the middle of Detroit's lineup.
Romine brought eight different gloves to spring training, and the Tigers want him to break them all in. Last season, Romine appeared at all four infield positions and all three outfield positions, so he gives the team a lot of versatility off the bench. However, he's a career .240 hitter with very minimal power (six career home runs in seven MLB seasons), so he's not a great fantasy asset.
Renteria also mentioned Avisail Garcia and Jose Abreu getting time as the designated hitter. Davidson, who is coming off a foot injury, could also get time at third base if the White Sox move Todd Frazier at some point during the season.
As manager Joe Maddon put it, he wants Baez to cut down on the "chrome" and focus on making all the routine plays. Maddon added that Baez "has a flair about his game, so I don't necessarily want to subtract that. But just have him understand the routine stuff has to be made routinely well." The 24-year-old often makes amazing plays in the field, but he's still fairly error-prone at this point (see the two errors he made in Game 7 of the World Series). For Baez to grab an everyday role at second base, he'll have to show more day-to-day consistency.
The 26-year-old shortstop will be a pivotal piece of the Rays infield in the coming season, so the team may unsurprisingly tread carefully with him early on. Duffy appeared in 21 games for Tampa last season after coming over at the trade deadline from San Francisco, slashing .258/.310/.357 with 14 doubles, two triples, five homers and 28 RBI over a combined 366 plate appearances.
Flaherty will be spotlighted this spring as Hardy rehabs and third baseman Manny Machado plays in the World Baseball Classic. The O's super-utility man is a favorite of manager Buck Showalter and, with a good spring, might be able to make a case for more at-bats this season. There's no timetable for Hardy's recovery just yet, and although it doesn't seem to be a major concern, Hardy has proven to be injury-prone throughout his six seasons as an Oriole. Flaherty won't light it up offensively, but his multi-position eligibility makes him an intriguing add in deeper leagues.
Donaldson tweaked his calf while running on Friday, but the general perception around camp was that the injury wasn't too serious. The Blue Jays will likely take a very cautious approach to the injury, and that could explain the two to three week timetable. It appears that Donaldson expects to be ready for Opening Day, but the situation is worth monitoring.
The throwing session marks another significant milestone in Wright's recovery from his June 2016 neck surgery. The veteran third baseman began taking batting practice last week, as well. Though his rehab is progressing, his overall health entering the 2017 season still remains in question.
The 32-year-old Gurriel, who his making the transition to a full-time first-baseman in 2017, spent the offseason preparing himself for the grind of a full MLB season. He spent 15 years in Cuba's Serie Nacional, but never played more than 89 games since 2005. Gurriel is taking on quite a bit this offseason, learning the positioning of a new infield spot and adjusting to the daily haul of baseball in the United States.