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It was a surprise in early May when the Twins decided to promote Eddie Rosario from AAA Rochester instead of Aaron Hicks. The idea was for him to spend a couple of weeks in The Show and then head back to Rochester. He homered on the first pitch he saw in the big leagues and played well enough to stick with the Twins the rest of the season.
In fact, he more than did “just enough.” He played quite well and earned every day playing time. In 122 games, he hit .267/.289/.459 (.758). He certainly filled out the stat sheet. He had 18 doubles, 15 triples and 13 home runs. He added 11 stolen bases.
He also played some great outfield defense. He primarily roamed the vast and spacious left field at Target Field, but he also spent 34 games in right field. In all, he recorded 16 outfield assists with a powerful and accurate arm. One quick prediction; he will have fewer assists in 2016 because it is unlikely that runners will try to take an extra base on his arm any longer.
So what is in store for the talented outfielder from Puerto Rico in 2016?
The phrase “No one walks off the island” originated when there was an influx of players from the Dominican Republic who needed to impress big league scouts with their ability to hit. The same can be said of players from another island, Puerto Rico. Rosario has always been a very aggressive hitter. In the low levels, he put up great numbers. In parts of two seasons in AA, he has struggled to get on base. In between, he endured a 50-game suspension. Last year, he had just 23 games in AAA before being promoted.
It’s no surprise that he struggled to just a .289 on base percentage. In fact, few players swing at as many pitches inside (or outside) of the strike zone than Rosario did in 2015. There were times he swung at fastballs above his eyes and homered, and there were a lot of times he swung at a curve ball well off of (or in front of) the plate and missed.
Last year, Rosario played left field in just over half of the Twins games. Twins left fielders were 12th in baseball with a .265 batting average. They were 25th in on-base percentage at .301. They rank ninth in slugging percentage at .442, and their .743 OPS was 15th in the big leagues. Thanks to Rosario, the Twins led baseball with 16 triples in 2015.
KEY NUMBERS
0.022 - With a .289 on-base percentage and a .267 batting average, Rosario posted a .022 Isolated Discipline (IsoD) during his rookie season. He’s unlikely to post an IsoD anywhere near the 0.058 IsoD that was the average in the American League. So, a lot of his success is going to be batting average and extra base pop related.
Rosario is going to swing a lot. He’ll miss a lot. He’ll produce some extra base hits and he’ll likely strikeout a lot. The key for me will be seeing improvements. Hopefully, he can take a few more walks. Hopefully he can have a little more control of the strike zone, finding a way to swing at fewer pitches outside the strike zone. Pitchers will adjust to him, and he is going to have to show the ability to adjust back to them.
PREDICTIONS
Eddie Rosario: 551 at-bats, .282/.316/.457 (.773), 28 doubles, 9 triples, 17 home runs.
Many see Rosario as a regression candidate. I can understand that. Twins fans understand regression fully after seeing what happened with Danny Santana from 2014 to 2015. While I can understand that thinking, I think it is a little flawed. While Santana’s 2014 numbers came completely out of nowhere, Rosario’s were not so out of this world as to think they are not replicable, or hopefully even something that he could improve upon.
So, I have him hitting for a little better batting average with a slightly improved IsoD. At the same time, with a full season, I think we’ll see a little drop in isolated power (IsoP), maybe even if it only be the reduction in triples. Overall, it’s a small improvement in OPS
YOUR TURN
Your turn. Share your thoughts on and predictions on Eddie Rosario in 2016. We can take a look back at the end of the season and see how we did.
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