Yoan Lopez
26-Year-Old PitcherRP
2019 Fantasy Outlook
Lopez was called up from Double-A Jackson in September for his big-league debut and allowed three runs in nine innings of relief while posting an impressive 11:1 K:BB. The lack of walks in his short major-league sample were a pleasant surprise, as he'd walked 10.3% of batters at Jackson. It's unclear if Lopez will make the Opening Day roster, but he appears to be big-league ready and could work his way into a high-leverage role if given the chance. Whether or not he can keep avoiding walks will likely determine whether he spends most of his time in the sixth inning or the eighth. Archie Bradley is the favorite for the ninth inning heading into the year, but Lopez could be a dark horse should Bradley take a step back or get injured. Read Past Outlooks
RANKSFrom Preseason
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$Signed a contract with the Diamondbacks in January of 2015 that includes a $8.27 million signing bonus.
Notches first save
PArizona Diamondbacks
July 24, 2019
Lopez didn't allow a baserunner in a scoreless ninth inning to earn the save Wednesday against the Orioles.
Greg Holland began the ninth inning but walked the first two batters he faced, causing the Diamondbacks to call upon Lopez to close the game. Lopez made quick work of the Orioles, inducing three flyouts to end the contest and record his first save of the campaign. Holland has been solid for most of the season, though he has allowed at least one earned run in three of his seven appearances in July. If his struggles continue, the team could look elsewhere in the bullpen for a closer, and it appears Lopez may be in a prime position to step into the role.
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Pitching Stats
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Left/Right Pitching Splits
Since 2017
No Stats
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .198 100 17 4 19 3 0 7
Since 2017vs Right .231 162 32 13 33 7 3 4
2019vs Left .200 89 14 4 17 3 0 5
2019vs Right .231 138 24 12 28 6 2 4
2018vs Left .182 11 3 0 2 0 0 2
2018vs Right .227 24 8 1 5 1 1 0
2017vs Left 0 0 0 0 0 0 0 0
2017vs Right 0 0 0 0 0 0 0 0
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Home/Away Pitching Splits
Since 2017
ERA on Road
ERA on Road
ERA on Road
No Stats
Since 2017Home 3.48 1.10 31.0 2 4 1 7.0 2.3 1.5
Since 2017Away 2.34 1.01 34.2 0 2 0 6.5 2.3 1.6
2019Home 3.04 1.01 26.2 2 4 1 5.4 2.4 1.0
2019Away 2.70 1.13 30.0 0 2 0 6.6 2.7 1.8
2018Home 6.23 1.62 4.1 0 0 0 16.6 2.1 4.2
2018Away 0.00 0.21 4.2 0 0 0 5.8 0.0 0.0
2017Home 0 0 0 0 0 0 0 0 0
2017Away 0 0 0 0 0 0 0 0 0
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Stat Review
How does Yoan Lopez compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. 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, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against this season's data (min 20 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in 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.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
96.4 mph
Left On Base
Exit Velocity
92.2 mph
Spin Rate
2215 rpm
Balls Hit 95+ MPH
Swinging Strike
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Yoan Lopez
Mound Musings: Checking in on the Bullpens – National League
38 days ago
Brad Johnson dives into all of the changes that have been made in NL bullpens, including in Arizona where Archie Bradley takes on the closer role for now.
NL FAAB Factor: Waiver Pickups of the Week
49 days ago
If Ian Happ can continue his impressive Triple-A numbers with the Cubs, Jan Levine figures he'll also be a solid addition to your team.
NL FAAB Factor: Waiver Pickups of the Week
70 days ago
In the latest weekly free-agent roundup, Jan Levine reminds you not to forget about A.J. Pollock's imminent return to the Dodgers' lineup.
Regan's Rumblings: Trade Deadline Bullpen Shuffle
82 days ago
Dave Regan breaks down the bullpen trade candidates, including Will Smith of the San Francisco Giants.
Mound Musings: NL West Draft Day Targets
185 days ago
Brad Johnson tackles the National League West this week, where in Colorado, German Marquez is thriving at Coors Field.
Past Fantasy Outlooks
Arizona forked over an $8.27 million signing bonus before the 2015 season to nab Lopez —a record bonus for an international amateur. However, Lopez’s debut season was a disappointment. Injuries limited him to just 48 innings with Double-A Mobile, where he went 1-6 with a 5.06 ERA and 32 strikeouts. Lopez also missed a team bus and went AWOL for a few days in July, which raised concerns about his makeup. He can hit the mid-90s with his fastball, and he also mixes in a slider and changeup. But like with many young pitchers, control is still an issue for Lopez, evidenced by his 4.5 BB/9 in 2015. The potential for a mid-rotation arm is certainly there, based on his physical traits. However, his control and makeup concerns could lead to him being a reliever long term.
Lopez is a Cuba defector who had a 3.12 ERA with a 28:11 K:BB ratio in 49 innings in 2013-14 for Isla de la Juventud in the Serie Nacional, Cuba's top professional league. He hit 100 mph on the radar gun in some workouts for scouts and is seen having a mid-90s fastball. He'll likely sign with a MLB team at some point in 2015 and it may not take long before he's ready for the majors.
More Fantasy News
Takes second loss of series
PArizona Diamondbacks
July 22, 2019
Lopez (1-4) took the loss Sunday, allowing three runs on three hits in two-thirds of an inning against the Brewers.
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Rebounds one night later
PArizona Diamondbacks
July 20, 2019
Lopez retired all five batters he faced to pick up his 14th hold in Friday's 10-7 win over the Brewers.
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Charged with loss
PArizona Diamondbacks
July 18, 2019
Lopez (1-3) was charged with the loss Thursday against the Brewers, surrendering three runs on four hits while recording just one out.
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Takes loss in relief
PArizona Diamondbacks
July 4, 2019
Lopez (1-2) recorded just one out before surrendering the lead Wednesday at Dodger Stadium.
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Can't protect lead
PArizona Diamondbacks
May 31, 2019
Lopez allowed two runs on four hits while striking out one in two-thirds of an inning in Thursday's 11-10 extra-inning loss to the Rockies.
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