Magneuris Sierra
Magneuris Sierra
25-Year-Old OutfielderOF
Miami Marlins
2021 Fantasy Outlook
Sierra has yet to see much playing time in the big leagues, and that trend continued in 2020, appearing in 19 contests. During that time, he went 11-for-44 with four extra-base hits, seven RBI and four stolen bases. While the general consensus on the 24-year-old is that he lacks both the ability to consistently get on base and substantial power, only time will tell if this speedster is able to develop at the dish as his career unfolds. One of the positive aspects of Sierra's approach at the plate is that he does regularly makes contact. His K% sat at 16.7% in 2019 and 17% in 2020. Despite this, it's tough to see much value outside of his speed in most fantasy leagues heading into the 2021 season. Read Past Outlooks
RANKSFrom Preseason
#600
ADP
$Signed a $105,000 contract with the Cardinals in July of 2012.
Still stuck on bench
OFMiami Marlins
April 26, 2021
Sierra went 0-for-1 as a pinch hitter during Sunday's loss to the Giants.
ANALYSIS
Even with Starling Marte (ribs) sidelined, Sierra hasn't seen much of a bump in his playing time as he's started only one of six games since Marte was injured. Sierra has the speed to be an asset in steals if he ever got the opportunity, but he seems locked into a bench role. He's 1-for-13 (.077) to begin the season with four runs scored and one stolen base.
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Batting Stats
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2021
2020
2019
2018
2017
2021 MLB Game Log
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2020 MLB Game Log
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2019 MLB Game Log
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2018 MLB Game Log
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2017 MLB Game Log
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Batting Order Slot Breakdown
vs Right-Handed Pitchers
vs RHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
1
vs Left-Handed Pitchers
vs LHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
Left/Right Batting Splits
Since 2019
 
 
+31%
OPS vs LHP
2021
 
 
-100%
OPS vs RHP
2020
 
 
+39%
OPS vs LHP
2019
 
 
+168%
OPS vs LHP
OPS PA R HR RBI SB AVG OBP SLG
Since 2019vs Left .861 13 3 0 3 0 .333 .417 .444
Since 2019vs Right .657 106 16 0 5 9 .260 .324 .333
2021vs Left .000 3 2 0 0 0 .000 .000 .000
2021vs Right .452 21 4 0 0 2 .167 .286 .167
2020vs Left .929 8 1 0 3 0 .250 .429 .500
2020vs Right .668 45 7 0 4 4 .250 .318 .350
2019vs Left 2.000 2 0 0 0 0 1.000 1.000 1.000
2019vs Right .745 40 5 0 1 3 .316 .350 .395
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Home/Away Batting Splits
Since 2019
 
 
+18%
OPS at Home
2021
 
 
+131%
OPS at Home
2020
 
 
+15%
OPS at Home
2019
 
 
+11%
OPS on Road
OPS PA R HR RBI SB AVG OBP SLG
Since 2019Home .755 41 8 0 3 6 .297 .350 .405
Since 2019Away .641 74 11 0 5 3 .250 .329 .313
2021Home .667 6 4 0 0 1 .333 .333 .333
2021Away .289 18 2 0 0 1 .067 .222 .067
2020Home .785 16 2 0 2 3 .308 .400 .385
2020Away .683 33 6 0 5 1 .222 .313 .370
2019Home .760 19 2 0 1 2 .278 .316 .444
2019Away .844 23 3 0 0 1 .409 .435 .409
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Stat Review
How does Magneuris Sierra compare to other hitters?
This section compares his stats with all batting seasons from the previous three seasons (minimum 400 plate appearances)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity and Barrels/PA % are benchmarked against 2019 data (min 400 PA) and Hard Hit Rate is benchmarked against last season's data (min 400 PA). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • BB/K
    Walk to strikeout ratio
  • BB Rate
    The percentage of plate appearances resulting in a walk.
  • K Rate
    The percentage of plate appearances resulting in a strikeout.
  • BABIP
    Batting average on balls in play. Measures how many of a batter’s balls in play go for hits.
  • ISO
    Isolated Power. Slugging percentage minus batting average. A computation used to measure a batter's raw power.
  • AVG
    Batting average. Hits divided by at bats.
  • OBP
    On Base Percentage. A measure of how often a batters reaches base. Roughly equal to number of times on base divided by plate appearances.
  • SLG
    Slugging Percentage. A measure of the batting productivity of a hitter. It is calculated as total bases divided by at bats.
  • OPS
    On base plus slugging. THe sum of a batter's on-base percentage and slugging percentage.
  • wOBA
    Weighted on-base average. Measures a player's overall offensive contributions per plate appearance. wOBA combines all the different aspects of hitting into one metric, weighting each of them in proportion to their actual run value.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Hard Hit Rate
    A measure of contact quality from Sports Info Solutions. This stat explains what percentage of batted balls were hit hard vs. medium or soft.
  • Barrels/PA
    The percentage of plate appearances where a batter had a batted ball classified as a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
BB/K
0.60
 
BB Rate
12.5%
 
K Rate
20.8%
 
BABIP
.188
 
ISO
.000
 
AVG
.143
 
OBP
.250
 
SLG
.143
 
OPS
.393
 
wOBA
.198
 
Exit Velocity
71.7 mph
 
Hard Hit Rate
6.3%
 
Barrels/PA
0.0%
 
Advanced Batting Stats
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Additional Stats
Games By Position
Defensive Stats
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Batted Ball Stats
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Stats Vs Upcoming Pitchers
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Past Fantasy Outlooks
2020
2019
2018
2017
2016
Sierra is one of the fastest players in baseball, with 98th percentile sprint speed according to Statcast. The problem is, only the Atlantic League allows batters to steal first base. Until the majors adopts that same rule, it will be tough for Sierra to have fantasy value. He has no power and a bad hit tool, but he can run and can cover ground in the outfield. He is only 24, so there is still room for growth, but it's tough to envision any upside here because the frame is not there to add power, so pitchers will continue to challenge him in the zone and overpower his bat. Expect Sierra to continue on the low-walk/high-contact path he has established throughout his minor-league career.
Acquired by the Marlins last winter, the defensive-minded Sierra opened the 2018 campaign with Triple-A New Orleans, looking to improve his on-base skills so he can take advantage of his 70-grade speed. Unfortunately, things did not go well as Sierra's plate skills fell back from his Double-A marks, registering a 2.8 BB% along with a 25.0 K% in 367 PA with the Baby Cakes. Despite a scant .628 OPS at the time, Sierra was summoned to South Beach after the All-Star break and took over in center field. Sierra held the job for most of the second half even though he slashed an anemic .190/.222/.211 in 156 PA, with only three steals in five attempts. The Marlins are still in rebuild mode while Sierra has options left, so if he fails to impress in the spring, he could be looking at another stint at Triple-A until he demonstrates the ability to get on base at an acceptable clip.
Sierra already has 64 MLB plate appearances despite the fact that he still hasn't mastered Double-A as a hitter. That usage is a bit unfortunate from a developmental perspective, as Sierra was getting rushed by the Cardinals, playing just 20 games at High-A and struggling to make an impact with his bat at Double-A in between brief MLB callups. Thankfully, that usage will be put to an end after he was dealt to the Marlins as part of the package that sent Marcell Ozuna to St. Louis. The elite defensive center fielder will likely be sent back to Double-A, where he can refine his offensive game, as the Marlins won't be contending anytime soon. He remains a 70-grade runner and excellent contact hitter, so he could end up being a poor man's Billy Hamilton in a few years. While the trade may delay his permanent ascent to the big leagues, it will likely work out better for his development in the long run. He could take over as the Marlins' everyday center fielder at some point in the coming years, and could even develop a little power with his new organization.
Sierra has been an enticing prospect ever since he made his stateside debut in 2013, but last year was the first time he lived up to that promise in a full-season league. He showed that he wasn't ready for Low-A in 2015, but he spent all of 2016 with Peoria and the results were outstanding. Sierra stole 31 bases while notching 36 extra-base hits. He is one of those players whose movements on the field stand out, even to the untrained eye. Sierra combines plus-plus speed with an all-fields approach. As he continues to mature physically, more of his doubles will start going for home runs. The primary concern regarding his chances of being a leadoff hitter at the highest level is his low walk rate, but he is such a good baserunner that he still led the Midwest League with 78 runs. This is a prospect worth targeting in dynasty leagues before the entire package starts to come together as he moves closer to the big leagues.
Sierra’s backers were forced to pump the brakes when he failed an optimistic assignment to Low-A Peoria at the outset of the 2015 season. The athletic outfielder hit .191/.219/.247 with a 27.4% K-rate in 190 plate appearances before he was mercifully re-assigned to rookie level Johnson City. However, the 19-year-old then quickly reminded everyone why he was the Cardinals’ Minor League Player of the Year in 2014. He turned in a .765 OPS with three home runs and 15 steals while cutting his K-rate to 17.6% in 239 plate appearances with Johnson City. Despite failing his first assignment to a full-season league, he proved in the second half that the tools of an across-the-board fantasy contributor are still present. Plus speed and an above-average hit tool highlight the package, but many believe more game power will show as he matures. This year it will be important for Sierra to show that he is ready to handle Low-A pitching in his age-20 season.
More Fantasy News
Pinch hits in Opening Day loss
OFMiami Marlins
April 2, 2021
Sierra went 0-for-1 as a pinch hitter during Thursday's 1-0 loss to the Rays.
ANALYSIS
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Likely to win bench role
OFMiami Marlins
February 24, 2021
Sierra, who is out of minor-league options, is expected to claim a spot on the big-league roster to begin the season, Barry Jackson of The Miami Herald reports.
ANALYSIS
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Draws second straight start
OFMiami Marlins
October 7, 2020
Sierra will start in center field and will bat eighth Wednesday in Game 2 of the Marlins' divisional-round series with the Braves, Andre Fernandez of Sirius XM Radio reports.
ANALYSIS
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Reinstated from injured list
OFMiami Marlins
September 24, 2020
Sierra (hamstring) was reinstated from the 10-day injured list Thursday.
ANALYSIS
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Making progress
OFMiami Marlins
Hamstring
September 18, 2020
Sierra is making progress in his recovery from a strained right hamstring and has participated in sim games without issues, Jordan McPherson of the Miami Herald reports.
ANALYSIS
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