Trey Mancini
Trey Mancini
27-Year-Old First Baseman1B
Baltimore Orioles
2019 Fantasy Outlook
Boom-boom had somewhat similar numbers in 2017 and 2018. He repeated his home-run total from his breakout 2017 season, although he needed 50 more plate appearances to get there. He scored a few more runs, thanks to those extra plate appearances, despite a 39-point drop in his on-base percentage. He is a bit of an oddball at the plate because, as a righty, he has been rather terrible against lefty pitchers the past two seasons, and was especially bad against them last year (.225/.287/.364). The only thing worse than his hitting lefties is watching him play the outfield. He has a good arm and can throw well from left field, but his lateral movement can be measured by laying down a yardstick without picking it up again. Statcast says there was more to his contact than the final numbers showed last year, but in a division loaded with quality lefty pitchers, there is a limit to his upside. As long as he stays in Camden, he can pull 20 homers. Read Past Outlooks
RANKSFrom Preseason
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$Signed a one-year, $575,000 contract with the Orioles in March of 2019.
Hits 35th homer
1BBaltimore Orioles
September 28, 2019
Mancini went 2-for-5 with a homer and two RBI in Saturday's victory over the Red Sox.
The homer, a solo shot off Josh Smith, put the Orioles up by five runs in the ninth inning. Mancini now has 35 homers on the season, significantly more than the 24 he hit in each of the previous two seasons. He's been a rare bright spot for the 54-win team, posting a strong .291/.364/.537 slash line on the season.
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Batting Stats
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Batting Order Slot Breakdown
vs Right-Handed Pitchers
vs RHP
vs Left-Handed Pitchers
vs LHP
Left/Right Batting Splits
Since 2017
Since 2017vs Left .774 572 77 22 49 0 .265 .327 .447
Since 2017vs Right .831 1329 163 61 184 2 .279 .337 .494
2019vs Left .910 219 40 12 26 0 .277 .365 .545
2019vs Right .893 460 66 23 71 1 .297 .363 .530
2018vs Left .651 188 20 5 6 0 .225 .287 .364
2018vs Right .741 448 49 19 52 0 .249 .304 .438
2017vs Left .742 165 17 5 17 0 .293 .321 .420
2017vs Right .860 421 48 19 61 1 .293 .344 .516
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Home/Away Batting Splits
Since 2017
OPS at Home
OPS on Road
OPS at Home
OPS on Road
Since 2017Home .819 940 121 42 121 1 .274 .335 .484
Since 2017Away .809 961 119 41 112 1 .276 .333 .476
2019Home .891 342 52 18 52 1 .290 .354 .537
2019Away .906 337 54 17 45 0 .292 .374 .532
2018Home .765 309 36 13 31 0 .251 .317 .448
2018Away .667 327 33 11 27 0 .234 .281 .386
2017Home .793 289 33 11 38 0 .281 .332 .461
2017Away .858 297 32 13 40 1 .304 .343 .514
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Stat Review
How does Trey Mancini 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.
    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 Rate
K Rate
Exit Velocity
90.1 mph
Hard Hit Rate
Advanced Batting Stats
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Additional Stats
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Defensive Stats
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Recent RotoWire Articles Featuring Trey Mancini
Games Played By Position: 2020 Eligibility Notes
7 days ago
Clay Link looks at appearances by position and makes note of multi-position eligibility and lost eligibility for 2020.
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28 days ago
Chris Bennett recommends a Nats stack Wednesday against Philadelphia.
Regan's Rumblings: All Surprise Team
29 days ago
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29 days ago
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Yahoo DFS Baseball: Monday Picks
30 days ago
Pete Alonso and a Mets stack against Miami look like a solid option for a five-game Monday Yahoo slate.
Past Fantasy Outlooks
There are not too many combinations in baseball better than being a right-handed pull hitter in Camden Yards. The slugger surprised us all when he not only made the Opening Day roster, but stayed on it all year and produced better power numbers than he had anywhere in the minor leagues. The problem for Mancini is this: he had a 51.0 percent groundball rate. Can he continue to hit one of every five flyballs out of the yard? Both are sustainable numbers for any hitter, and we still do not have enough batted balls in play to know confidently the sum of Mancini's abilities. His groundball rate was split neutral, but his HR/FB rate dropped to 16.1 percent in the second half from 23.7 percent in the first half. As long as he gets to hit in Baltimore, he is a decent bet to repeat a 20-homer season, but forecasting 25-plus is tough to do.
Coming off of a breakout 2015 season in which he slashed a hearty .331/.370/.539 between High-A and Double-A, Mancini entered the 2016 season as one of the organization's more promising prospects. After bludgeoning Double-A pitching to the tune of seven home runs in his first 17 games, he was promoted to Triple-A. In 125 games there, the power-hitting first baseman put together an impressive campaign in which he slashed .280/.349/.427 and saw his walk rate increase to nine percent, but also his strikeout rate spike to nearly 23 percent. He joined the O's as a September callup and belted three homers in his 15 big league plate appearances. It will be interesting to see what the Orioles do with Mancini in 2017. With first base blocked by Chris Davis and the DH role likely accounted for with the return of Mark Trumbo, he could end up seeing time in left field in an effort to get his bat in the lineup. It appears to be a tall task, but if he carves out a consistent role, he is capable of providing value due to his impressive power profile.
Mancini vaulted himself to the top of Baltimore's prospect pipeline with a breakout 2015. Drafted in 2013, Mancini had not been regarded as a high level prospect. He started by repeating the High-A level and had a .213 ISO, earning a promotion to Double-A. Mancini was even better at the higher level, punching up his ISO to .227. Mancini sported a .400 BABIP at Double-A, a mark which will be difficult to sustain. With a walk rate of 5.8 percent between the two levels, he still has some work to do on plate discipline, but his 21 home runs on the season reflect power that is beginning to show up in games. Mancini appears to have surpassed Christian Walker as the top prospect at first base. Given how Mancini dominated Double-A, he seems likely to begin the season at Triple-A and he could warrant a midseason promotion unless the Orioles make a big commitment to a free agent first baseman.
More Fantasy News
Posts five hits
1BBaltimore Orioles
September 24, 2019
Mancini went 5-for-5 with two doubles, an RBI and two runs in an 11-4 victory against the Blue Jays on Tuesday.
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Reaches base four times in return
1BBaltimore Orioles
September 24, 2019
Mancini (leg) went 2-for-6 with two walks Monday in the Orioles' 11-10 loss to the Blue Jays in 15 innings.
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Returns to lineup
1BBaltimore Orioles
September 23, 2019
Mancini (leg) is back in the lineup Monday against the Blue Jays, Roch Kubatko of MASN Sports reports.
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Absent from Sunday's lineup
1BBaltimore Orioles
September 22, 2019
Mancini is not in Sunday's lineup against the Mariners, Roch Kubatko of MASN Sports reports.
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Stays hot with four-hit game
1BBaltimore Orioles
September 19, 2019
Mancini went 4-for-4 with a pair of doubles and two RBI in the Orioles' 8-4 loss to the Blue Jays on Thursday.
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