Magneuris Sierra

Magneuris Sierra

26-Year-Old OutfielderOF
Atlanta Braves
2023 Fantasy Outlook
You might recall that Sierra was arguably the biggest name traded from the Cardinals to the Marlins back in December of 2017 in the Marcell Ozuna deal. Sandy Alcantara and Zac Gallen were also part of that trade. Oops. Sierra has struggled to stick in the majors because he's simply not strong enough to hit the ball with any authority at all. He managed just a .442 OPS over 96 plate appearances for the Angels in 2022, although he was 6-for-7 on stolen base attempts. Sierra has elite speed and stolen base chops, but he's probably never going to get on enough for it to matter. Read Past Outlooks
RANKS
$Signed a one-year, minor-league contract with the Braves in January of 2023.
Shifted to minor-league camp
OFAtlanta Braves  AAA
March 14, 2023
Sierra was reassigned to minor-league camp Tuesday.
ANALYSIS
Sierra will most likely return to Triple-A, where he slashed .297/.358/.437 and drove in 45 RBI through 311 plate appearances last season. He also stole 22 bases. There's a chance he appears in some games this season for Atlanta, and if so, most of his value will come from swiping bags.
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Batting Stats
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2022
2021
2020
2019
2018
2017
2022 MLB Game Log
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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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Minor League 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
2
1
3
6
vs Left-Handed Pitchers
vs LHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
3
2
4
Left/Right Batting Splits
Since 2020
 
 
+25%
OPS vs RHP
2022
 
 
+53%
OPS vs RHP
2021
 
 
+16%
OPS vs RHP
2020
 
 
+39%
OPS vs LHP
OPS PA R HR RBI SB AVG OBP SLG
Since 2020vs Left .455 91 10 0 5 2 .198 .222 .233
Since 2020vs Right .569 283 32 0 12 19 .221 .282 .287
2022vs Left .329 34 1 0 1 1 .121 .147 .182
2022vs Right .505 62 6 0 4 5 .190 .230 .276
2021vs Left .490 49 8 0 1 1 .245 .245 .245
2021vs Right .566 176 19 0 4 10 .225 .291 .275
2020vs Left .929 8 1 0 3 0 .250 .429 .500
2020vs Right .668 45 7 0 4 4 .250 .318 .350
More Splits View More Split Stats
Home/Away Batting Splits
Since 2020
 
 
+25%
OPS on Road
2022
 
 
+89%
OPS on Road
2021
 
 
+13%
OPS on Road
2020
 
 
+15%
OPS at Home
OPS PA R HR RBI SB AVG OBP SLG
Since 2020Home .477 166 18 0 8 8 .194 .238 .239
Since 2020Away .595 204 24 0 9 13 .232 .292 .303
2022Home .304 46 2 0 3 0 .130 .130 .174
2022Away .576 50 5 0 2 6 .200 .265 .311
2021Home .512 104 14 0 3 5 .208 .262 .250
2021Away .581 121 13 0 2 6 .248 .298 .283
2020Home .785 16 2 0 2 3 .308 .400 .385
2020Away .683 33 6 0 5 1 .222 .313 .370
More Splits View More Split Stats
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.
  • Expected BA
    Expected Batting Average.
  • Expected SLG
    Expected Slugging Percentage.
  • Sprint Speed
    The speed of a runner from home to first, in feet per second.
  • Ground Ball %
    The percentage of balls put in play that are on the ground.
  • Line Drive %
    The percentage of balls put in play that are line drives.
  • Fly Ball %
    The percentage of balls put in play that are fly balls.
BB/K
0.16
 
BB Rate
4.2%
 
K Rate
26.0%
 
BABIP
.227
 
ISO
.077
 
AVG
.165
 
OBP
.200
 
SLG
.242
 
OPS
.442
 
wOBA
.197
 
Exit Velocity
82.2 mph
 
Hard Hit Rate
13.4%
 
Barrels/PA
0.0%
 
Expected BA
.197
 
Expected SLG
.234
 
Sprint Speed
26.1 ft/sec
 
Ground Ball %
50.8%
 
Line Drive %
20.3%
 
Fly Ball %
28.8%
 
Prospect Rankings History
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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Recent RotoWire Articles Featuring Magneuris Sierra See More
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Jan Levine is urging you to add Brendan Rodgers, provided he's still available in your leagues.
Past Fantasy Outlooks
2021
2020
2019
2018
2017
2016
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.
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
Heads to Atlanta on NRI deal
OFAtlanta Braves  AAA
January 30, 2023
Sierra agreed Monday with Atlanta on a minor-league contract and received an invitation to MLB spring training, Double-A Mississippi broadcaster Chris Harris reports.
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Clears waivers
OFLos Angeles Angels  AAA
October 3, 2022
The Angels outrighted Sierra to Triple-A Salt Lake on Sunday.
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Loses roster spot
OFLos Angeles Angels  AAA
September 28, 2022
The Angels designated Sierra for assignment following Tuesday's 4-3 win over the Athletics, Rhett Bollinger of MLB.com reports.
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Back in fourth-outfielder role
OFLos Angeles Angels  AAA
August 21, 2022
Sierra is out of the lineup for Sunday's game in Detroit.
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On bench Friday
OFLos Angeles Angels  AAA
August 12, 2022
Sierra isn't starting Friday against the Twins, Jeff Fletcher of The Orange County Register reports.
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