This article is part of our DFS MLB series.
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Park Factors & Lines
Park factors in this piece are a three-year average from 2015-2017, indexed (100 = average). For example, left-handed home runs at Guaranteed Rate Field (home of the White Sox) have a three-year index of 122, which means there have been 22% more homers hit by lefties from all teams during that span in that park compared to a completely neutral environment. Left-handed hitters have a significant advantage when hitting at Guaranteed Rate Field.
AT&T Park (home of the Giants), has a three-year run index of 90, which means that games played at AT&T park have had 10% fewer runs scored overall than a completely neutral environment. Overall offensive production is reduced by a significant amount for games played in San Francisco, making it a safer environment than most for pitchers.
| Lefties | Righties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Road Starter | Home Starter | Home Tm | R | AVG | HR | AVG | HR | K | O/U | HmL | 1st Pitch |
| Luis Cessa | Nathan Eovaldi | Rays | 92 | 95 | 97 | 94 | 90 | 110 | 8.0 | 120 | 12:10 PM |
| Clayton Richard | Corey Oswalt | Mets | 90 | 93 | 101 | 90 | 92 | 106 | 8.0 | -125 | 12:10 PM |
| Jack Flaherty | Sal Romano | Reds | 104 | 100 | 119 | 98 | 108 | 106 | 9.5 | 115 | 12:35 PM |
| Walker Buehler | Jake Arrieta | Phillies | 98 | 95 | 120 | 97 | 124 | ||||
Helpful Links
For those interested, we've started an MLB DFS Slack channel for paid RotoWire subscribers. (There is a season-long one as well.) To join those channels, e-mail support@rotowire.com.
Park Factors & Lines
Park factors in this piece are a three-year average from 2015-2017, indexed (100 = average). For example, left-handed home runs at Guaranteed Rate Field (home of the White Sox) have a three-year index of 122, which means there have been 22% more homers hit by lefties from all teams during that span in that park compared to a completely neutral environment. Left-handed hitters have a significant advantage when hitting at Guaranteed Rate Field.
AT&T Park (home of the Giants), has a three-year run index of 90, which means that games played at AT&T park have had 10% fewer runs scored overall than a completely neutral environment. Overall offensive production is reduced by a significant amount for games played in San Francisco, making it a safer environment than most for pitchers.
| Lefties | Righties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Road Starter | Home Starter | Home Tm | R | AVG | HR | AVG | HR | K | O/U | HmL | 1st Pitch |
| Luis Cessa | Nathan Eovaldi | Rays | 92 | 95 | 97 | 94 | 90 | 110 | 8.0 | 120 | 12:10 PM |
| Clayton Richard | Corey Oswalt | Mets | 90 | 93 | 101 | 90 | 92 | 106 | 8.0 | -125 | 12:10 PM |
| Jack Flaherty | Sal Romano | Reds | 104 | 100 | 119 | 98 | 108 | 106 | 9.5 | 115 | 12:35 PM |
| Walker Buehler | Jake Arrieta | Phillies | 98 | 95 | 120 | 97 | 124 | 109 | 8.5 | 120 | 12:35 PM |
| Jameson Taillon | Trevor Bauer | Indians | 114 | 114 | 110 | 102 | 98 | 94 | 8.5 | -180 | 1:10 PM |
| Tanner Roark | Freddy Peralta | Brewers | 105 | 103 | 131 | 96 | 108 | 103 | 9.0 | -120 | 2:10 PM |
| Matt Boyd | Danny Duffy | Royals | 103 | 102 | 85 | 102 | 76 | 94 | 9.0 | -115 | 2:15 PM |
| Robbie Ray | Jon Lester | Cubs | 98 | 99 | 88 | 98 | 114 | 100 | 2:20 PM | ||
| Ervin Santana | Sam Gaviglio | Blue Jays | 99 | 102 | 98 | 101 | 101 | 97 | 9.5 | -120 | 4:07 PM |
| Derek Holland | Mike Leake | Mariners | 91 | 96 | 105 | 94 | 97 | 104 | 4:10 PM | ||
| David Price | Dylan Bundy | Orioles | 106 | 103 | 114 | 101 | 121 | 94 | 9.0 | 155 | 7:05 PM |
| Edwin Jackson | Martin Perez | Rangers | 117 | 108 | 107 | 110 | 106 | 93 | 12.0 | 105 | 8:05 PM |
| Charlie Morton | Jon Gray | Rockies | 138 | 121 | 117 | 116 | 118 | 87 | 10.0 | 110 | 8:40 PM |
| James Shields | Tyler Skaggs | Angels | 91 | 96 | 91 | 96 | 102 | 109 | 8.5 | -235 | 10:07 PM |
Pitcher Skills
These stats look at each starting pitcher's stats since the start of last season.
The final two columns are team stats for each pitcher's opponent.
OwRC+ is the team wRC+ for the current season, against the handedness of that pitcher.
TeamK% is the strikeout rate of the opposing team for the current season, against the handedness of that pitcher.
Note: Opponent team matchup data from 2018 season.
| Player | Opp | IP | K% | BB% | K-BB | HR/9 | ERA | WHIP | DK | FD | OwRC+ | OsK% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jake Arrieta (R) | v LAD | 274.7 | 20.6 | 7.9 | 12.7 | 1.08 | 3.51 | 1.24 | $7,100 | $7,500 | 121 | 21.0 |
| Trevor Bauer (R) | v PIT | 316.7 | 28.4 | 8.0 | 20.4 | 0.88 | 3.41 | 1.27 | $13,400 | $11,500 | 102 | 19.4 |
| Matt Boyd (L) | at KC | 238.3 | 19.5 | 8.8 | 10.8 | 1.13 | 4.98 | 1.40 | $7,000 | $6,500 | 93 | 23.0 |
| Walker Buehler (R) | at PHI | 66.7 | 25.6 | 7.6 | 18.1 | 0.95 | 4.05 | 1.22 | $8,400 | $7,800 | 98 | 25.0 |
| Dylan Bundy (R) | v BOS | 278.0 | 23.1 | 7.4 | 15.7 | 1.59 | 4.37 | 1.24 | $6,300 | $7,000 | 121 | 18.4 |
| Luis Cessa (R) | at TB | 51.0 | 19.5 | 11.3 | 8.1 | 1.41 | 4.24 | 1.41 | $6,300 | $6,300 | 103 | 22.3 |
| Danny Duffy (L) | v DET | 267.0 | 20.8 | 8.5 | 12.3 | 1.08 | 4.08 | 1.34 | $7,700 | $8,800 | 105 | 20.9 |
| Nathan Eovaldi (R) | v NYY | 57.0 | 23.7 | 3.6 | 20.1 | 1.74 | 4.26 | 0.98 | $6,500 | $6,900 | 111 | 22.9 |
| Jack Flaherty (R) | at CIN | 101.3 | 27.3 | 8.9 | 18.4 | 1.33 | 3.82 | 1.20 | $9,000 | $7,400 | 101 | 20.1 |
| Sam Gaviglio (R) | v MIN | 139.0 | 18.6 | 7.6 | 11.0 | 1.81 | 4.47 | 1.33 | $7,400 | $7,000 | 103 | 19.9 |
| Jon Gray (R) | v HOU | 209.7 | 26.3 | 6.7 | 19.7 | 0.90 | 4.51 | 1.36 | $7,500 | $8,200 | 113 | 18.1 |
| Derek Holland (L) | at SEA | 237.0 | 19.8 | 10.7 | 9.1 | 1.67 | 5.28 | 1.54 | $7,800 | $6,500 | 108 | 21.2 |
| Edwin Jackson (R) | at TEX | 106.7 | 18.0 | 8.0 | 10.0 | 2.02 | 4.56 | 1.35 | $7,700 | $7,600 | 100 | 24.6 |
| Mike Leake (R) | v SF | 307.7 | 15.8 | 5.1 | 10.7 | 1.05 | 4.04 | 1.30 | $7,000 | $8,500 | 101 | 22.4 |
| Jon Lester (L) | v ARI | 295.3 | 21.6 | 8.5 | 13.1 | 1.25 | 3.87 | 1.30 | $7,200 | $8,100 | 96 | 22.4 |
| Charlie Morton (R) | at COL | 259.0 | 28.5 | 8.8 | 19.7 | 0.87 | 3.34 | 1.17 | $8,800 | $9,500 | 87 | 23.0 |
| Corey Oswalt (R) | v SD | 22.3 | 16.9 | 6.7 | 10.1 | 1.61 | 5.64 | 0.99 | $5,500 | $6,000 | 84 | 25.0 |
| Freddy Peralta (R) | v WAS | 37.3 | 34.5 | 12.4 | 22.1 | 0.48 | 2.65 | 0.96 | $9,500 | $8,400 | 102 | 20.5 |
| Martin Perez (L) | v OAK | 219.7 | 13.9 | 8.1 | 5.8 | 1.31 | 5.33 | 1.62 | $4,400 | $5,500 | 107 | 22.9 |
| David Price (L) | at BAL | 189.0 | 24.0 | 7.4 | 16.5 | 1.24 | 3.86 | 1.21 | $9,500 | $9,000 | 75 | 21.8 |
| Robbie Ray (L) | at CHC | 215.7 | 32.4 | 10.9 | 21.4 | 1.46 | 3.51 | 1.24 | $7,300 | $7,200 | 103 | 22.0 |
| Clayton Richard (L) | at NYM | 324.3 | 17.6 | 7.9 | 9.7 | 1.00 | 4.80 | 1.45 | $6,200 | $7,100 | 80 | 26.2 |
| Tanner Roark (R) | at MIL | 296.0 | 20.7 | 8.4 | 12.3 | 1.16 | 4.74 | 1.36 | $6,600 | $6,800 | 105 | 24.5 |
| Sal Romano (R) | v STL | 191.0 | 17.4 | 9.3 | 8.2 | 1.32 | 4.85 | 1.45 | $4,800 | $5,500 | 99 | 21.5 |
| Ervin Santana (R) | at TOR | 211.3 | 19.3 | 7.1 | 12.3 | 1.32 | 3.28 | 1.13 | $7,600 | $8,000 | 103 | 22.8 |
| James Shields (R) | at LAA | 250.0 | 18.5 | 9.5 | 9.0 | 1.51 | 4.72 | 1.35 | $6,000 | $7,300 | 111 | 20.5 |
| Tyler Skaggs (L) | v CWS | 189.0 | 23.0 | 7.4 | 15.5 | 1.00 | 3.52 | 1.30 | $10,200 | $9,300 | 96 | 24.4 |
| Jameson Taillon (R) | at CLE | 245.0 | 22.2 | 7.3 | 14.9 | 0.84 | 4.15 | 1.36 | $7,500 | $8,600 | 112 | 19.5 |
Pitcher Splits
These splits cover each pitcher's performance against left-handed and right-handed hitters since the start of the 2016 season.
Stats highlighted yellow indicate matchups favoring the pitcher. Stats highlighted blue indicate matchups favoring opposing hitters.
| v. Lefties | v. Righties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | Opp | K% | BB% | K-BB | HR/9 | wOBA | K% | BB% | K-BB | HR/9 | wOBA |
| Jake Arrieta (R) | v LAD | 22.7 | 11.6 | 11.1 | 1.05 | 0.315 | 21.4 | 6.1 | 15.3 | 0.84 | 0.263 |
| Trevor Bauer (R) | v PIT | 26.0 | 8.2 | 17.8 | 1.01 | 0.310 | 25.0 | 8.3 | 16.7 | 0.81 | 0.304 |
| Matt Boyd (L) | at KC | 19.9 | 6.6 | 13.3 | 0.83 | 0.292 | 19.6 | 8.6 | 10.9 | 1.36 | 0.337 |
| Walker Buehler (R) | at PHI | 28.0 | 8.0 | 20.0 | 1.15 | 0.289 | 23.7 | 7.2 | 16.4 | 0.76 | 0.295 |
| Dylan Bundy (R) | v BOS | 18.5 | 7.9 | 10.6 | 1.43 | 0.341 | 27.0 | 7.8 | 19.2 | 1.68 | 0.306 |
| Luis Cessa (R) | at TB | 18.4 | 8.7 | 9.7 | 1.55 | 0.289 | 17.1 | 7.0 | 10.0 | 1.96 | 0.349 |
| Danny Duffy (L) | v DET | 27.0 | 4.1 | 22.9 | 0.43 | 0.222 | 21.9 | 8.1 | 13.8 | 1.36 | 0.331 |
| Nathan Eovaldi (R) | v NYY | 20.6 | 9.1 | 11.5 | 1.82 | 0.353 | 19.5 | 4.1 | 15.4 | 1.58 | 0.291 |
| Jack Flaherty (R) | at CIN | 20.9 | 10.9 | 10.0 | 1.44 | 0.308 | 33.6 | 7.0 | 26.6 | 1.23 | 0.298 |
| Sam Gaviglio (R) | v MIN | 15.3 | 8.0 | 7.3 | 1.62 | 0.339 | 21.2 | 7.3 | 13.9 | 1.96 | 0.347 |
| Jon Gray (R) | v HOU | 25.4 | 7.4 | 18.0 | 1.02 | 0.313 | 27.1 | 7.3 | 19.7 | 0.82 | 0.318 |
| Derek Holland (L) | at SEA | 14.9 | 8.3 | 6.6 | 0.72 | 0.273 | 19.0 | 10.1 | 8.9 | 1.77 | 0.372 |
| Edwin Jackson (R) | at TEX | 18.7 | 10.9 | 7.8 | 1.34 | 0.330 | 15.9 | 7.8 | 8.1 | 2.24 | 0.372 |
| Mike Leake (R) | v SF | 13.7 | 5.5 | 8.2 | 1.09 | 0.326 | 18.3 | 3.9 | 14.3 | 0.99 | 0.321 |
| Jon Lester (L) | v ARI | 27.4 | 5.0 | 22.4 | 0.91 | 0.266 | 21.5 | 8.5 | 13.0 | 1.19 | 0.306 |
| Charlie Morton (R) | at COL | 35.0 | 9.5 | 25.5 | 0.81 | 0.274 | 22.4 | 8.4 | 14.0 | 0.88 | 0.311 |
| Corey Oswalt (R) | v SD | 14.3 | 8.6 | 5.7 | 1.93 | 0.265 | 18.5 | 5.6 | 13.0 | 1.38 | 0.276 |
| Freddy Peralta (R) | v WAS | 32.4 | 13.5 | 18.9 | 1.02 | 0.301 | 36.6 | 11.3 | 25.4 | 0.00 | 0.171 |
| Martin Perez (L) | v OAK | 20.0 | 7.4 | 12.6 | 0.53 | 0.276 | 11.4 | 8.7 | 2.7 | 1.22 | 0.362 |
| David Price (L) | at BAL | 20.4 | 4.0 | 16.4 | 1.02 | 0.305 | 25.0 | 6.9 | 18.1 | 1.25 | 0.309 |
| Robbie Ray (L) | at CHC | 34.5 | 5.5 | 29.0 | 1.00 | 0.282 | 29.3 | 11.4 | 17.9 | 1.47 | 0.325 |
| Clayton Richard (L) | at NYM | 24.0 | 5.8 | 18.3 | 0.19 | 0.295 | 14.5 | 9.1 | 5.4 | 1.16 | 0.358 |
| Tanner Roark (R) | at MIL | 19.6 | 10.4 | 9.2 | 1.08 | 0.324 | 21.4 | 6.5 | 14.8 | 0.89 | 0.288 |
| Sal Romano (R) | v STL | 17.4 | 10.8 | 6.6 | 1.32 | 0.361 | 17.5 | 7.8 | 9.7 | 1.31 | 0.325 |
| Ervin Santana (R) | at TOR | 16.3 | 6.6 | 9.7 | 1.10 | 0.283 | 22.5 | 7.5 | 15.0 | 1.19 | 0.302 |
| James Shields (R) | at LAA | 16.0 | 11.4 | 4.7 | 1.73 | 0.350 | 19.2 | 8.1 | 11.0 | 1.69 | 0.346 |
| Tyler Skaggs (L) | v CWS | 23.4 | 5.0 | 18.4 | 0.60 | 0.289 | 22.8 | 9.1 | 13.7 | 1.11 | 0.326 |
| Jameson Taillon (R) | at CLE | 17.1 | 8.5 | 8.5 | 0.89 | 0.333 | 26.1 | 4.4 | 21.7 | 0.96 | 0.296 |
