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 |
| Kevin Gausman | Kyle Gibson | Twins | 105 | 103 | 95 | 105 | 113 | 93 | 8.5 | -150 | 2:10 PM |
| Matt Harvey | Tyler Chatwood | Cubs | 98 | 99 | 88 | 98 | 114 | 100 | 2:20 PM | ||
| Carlos Martinez | Jeff Samardzija | Giants | 90 | 97 | 53 | 100 | 74 | 99 | 8.0 | 110 | 4:05 PM |
| Jake Arrieta | Jameson Taillon | Pirates | 96 | 97 | 101 | 103 | 83 | 94 | 8.0 | ||
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 |
| Kevin Gausman | Kyle Gibson | Twins | 105 | 103 | 95 | 105 | 113 | 93 | 8.5 | -150 | 2:10 PM |
| Matt Harvey | Tyler Chatwood | Cubs | 98 | 99 | 88 | 98 | 114 | 100 | 2:20 PM | ||
| Carlos Martinez | Jeff Samardzija | Giants | 90 | 97 | 53 | 100 | 74 | 99 | 8.0 | 110 | 4:05 PM |
| Jake Arrieta | Jameson Taillon | Pirates | 96 | 97 | 101 | 103 | 83 | 94 | 8.0 | -130 | 4:05 PM |
| Luis Severino | J.A. Happ | Blue Jays | 99 | 102 | 98 | 101 | 101 | 97 | 7.5 | 170 | 4:07 PM |
| Edwin Jackson | Corey Kluber | Indians | 114 | 114 | 110 | 102 | 98 | 94 | 8.5 | -280 | 4:10 PM |
| James Shields | Charlie Morton | Astros | 83 | 93 | 109 | 94 | 109 | 101 | 8.0 | -340 | 4:10 PM |
| Kyle Freeland | James Paxton | Mariners | 91 | 96 | 105 | 94 | 97 | 104 | 7.5 | -200 | 4:10 PM |
| Cole Hamels | Mike Fiers | Tigers | 103 | 98 | 104 | 103 | 101 | 104 | 8.5 | 100 | 4:10 PM |
| Anibal Sanchez | Aaron Wilkerson | Brewers | 105 | 103 | 131 | 96 | 108 | 103 | 4:10 PM | ||
| Blake Snell | Steven Matz | Mets | 90 | 93 | 101 | 90 | 92 | 106 | 7.0 | 115 | 4:10 PM |
| Wei-Yin Chen | Max Scherzer | Nationals | 100 | 98 | 89 | 105 | 114 | 98 | 7.0 | -360 | 7:15 PM |
| David Price | Brad Keller | Royals | 103 | 102 | 85 | 102 | 76 | 94 | 9.0 | 170 | 7:15 PM |
| Ross Stripling | Deck McGuire | Angels | 91 | 96 | 91 | 96 | 102 | 109 | 9.5 | 145 | 7:15 PM |
| Tyson Ross | Robbie Ray | Diamondbacks | 116 | 109 | 106 | 105 | 111 | 100 | 8.0 | -200 | 10:10 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) | at PIT | 257.3 | 20.8 | 7.8 | 13.0 | 1.12 | 3.53 | 1.24 | $6,300 | $7,200 | 93 | 20.0 |
| Tyler Chatwood (R) | v CIN | 221.0 | 19.6 | 14.7 | 4.8 | 1.02 | 4.64 | 1.54 | $5,400 | $6,600 | 103 | 19.9 |
| Wei-Yin Chen (L) | at WAS | 94.7 | 17.4 | 8.4 | 9.1 | 1.24 | 4.94 | 1.34 | $4,100 | $6,100 | 94 | 22.2 |
| Mike Fiers (R) | v TEX | 246.0 | 20.2 | 7.7 | 12.4 | 1.76 | 4.68 | 1.35 | $6,900 | $7,100 | 95 | 24.6 |
| Kyle Freeland (L) | at SEA | 261.3 | 17.1 | 8.6 | 8.5 | 1.00 | 3.75 | 1.36 | $9,200 | $7,000 | 112 | 21.2 |
| Kevin Gausman (R) | at MIN | 289.0 | 21.5 | 7.7 | 13.8 | 1.43 | 4.45 | 1.43 | $7,400 | $7,300 | 98 | 19.5 |
| Kyle Gibson (R) | v BAL | 258.7 | 19.4 | 9.1 | 10.3 | 1.22 | 4.49 | 1.43 | $7,900 | $7,800 | 86 | 24.7 |
| Cole Hamels (L) | at DET | 250.3 | 19.8 | 8.5 | 11.3 | 1.37 | 4.13 | 1.24 | $9,600 | $8,800 | 113 | 20.1 |
| J.A. Happ (L) | v NYY | 248.0 | 24.1 | 7.1 | 17.0 | 1.16 | 3.74 | 1.23 | $9,400 | $8,200 | 127 | 22.9 |
| Matt Harvey (R) | at CHC | 173.3 | 16.5 | 8.8 | 7.6 | 1.77 | 5.87 | 1.49 | $6,500 | $6,300 | 111 | 20.6 |
| Edwin Jackson (R) | at CLE | 88.7 | 18.9 | 7.5 | 11.4 | 2.23 | 4.77 | 1.39 | $5,800 | $7,500 | 110 | 20.7 |
| Brad Keller (R) | v BOS | 56.0 | 14.7 | 8.0 | 6.7 | 0.16 | 2.09 | 1.16 | $4,200 | $6,000 | 120 | 18.8 |
| Corey Kluber (R) | v OAK | 323.0 | 31.3 | 4.0 | 27.3 | 1.06 | 2.40 | 0.87 | $11,800 | $11,400 | 112 | 21.7 |
| Carlos Martinez (R) | at SF | 283.7 | 24.6 | 9.6 | 15.0 | 0.95 | 3.52 | 1.28 | $8,100 | $8,400 | 104 | 23.5 |
| Steven Matz (L) | v TB | 150.0 | 19.1 | 7.9 | 11.3 | 1.50 | 4.62 | 1.36 | $6,100 | $7,400 | 103 | 24.1 |
| Deck McGuire (R) | v LAD | 30.3 | 17.4 | 7.6 | 9.8 | 2.37 | 5.34 | 1.25 | $4,000 | $5,500 | 114 | 21.9 |
| Charlie Morton (R) | v CWS | 249.0 | 28.5 | 8.8 | 19.7 | 0.90 | 3.18 | 1.16 | $12,200 | $10,800 | 99 | 24.9 |
| James Paxton (L) | v COL | 247.7 | 30.1 | 6.9 | 23.2 | 0.80 | 3.16 | 1.09 | $12,500 | $10,300 | 95 | 21.4 |
| David Price (L) | at KC | 171.3 | 23.4 | 7.9 | 15.5 | 1.21 | 3.89 | 1.23 | $9,000 | $8,000 | 86 | 22.3 |
| Robbie Ray (L) | v SD | 200.7 | 33.1 | 10.9 | 22.2 | 1.35 | 3.27 | 1.21 | $9,200 | $9,000 | 90 | 23.0 |
| Tyson Ross (R) | at ARI | 149.0 | 19.1 | 11.4 | 7.8 | 1.21 | 5.07 | 1.43 | $7,500 | $6,900 | 79 | 23.2 |
| Jeff Samardzija (R) | v STL | 243.3 | 22.8 | 5.4 | 17.4 | 1.33 | 4.73 | 1.22 | $4,400 | $5,700 | 98 | 22.6 |
| Anibal Sanchez (R) | at MIL | 158.3 | 21.8 | 6.7 | 15.0 | 1.88 | 5.23 | 1.43 | $5,900 | $6,800 | 102 | 24.3 |
| Max Scherzer (R) | v MIA | 321.3 | 35.3 | 6.8 | 28.5 | 0.90 | 2.38 | 0.89 | $14,300 | $12,200 | 94 | 22.9 |
| Luis Severino (R) | at TOR | 311.7 | 29.6 | 6.4 | 23.2 | 0.78 | 2.60 | 1.00 | $13,000 | $11,700 | 103 | 23.2 |
| James Shields (R) | at HOU | 230.7 | 18.0 | 9.8 | 8.1 | 1.56 | 4.68 | 1.34 | $4,700 | $6,500 | 116 | 19.0 |
| Blake Snell (L) | at NYM | 238.0 | 24.8 | 10.2 | 14.5 | 1.02 | 3.21 | 1.18 | $12,700 | $9,900 | 82 | 26.0 |
| Ross Stripling (R) | at LAA | 157.7 | 26.6 | 5.0 | 21.6 | 1.08 | 2.97 | 1.15 | $9,900 | $8,600 | 110 | 20.2 |
| Jameson Taillon (R) | v PHI | 227.0 | 21.6 | 7.5 | 14.1 | 0.87 | 4.28 | 1.39 | $6,600 | $7,600 | 98 | 25.9 |
| Aaron Wilkerson (R) | v ATL | 13.3 | 19.2 | 1.9 | 17.3 | 1.35 | 6.08 | 0.90 | $5,000 | $5,500 | 99 | 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) | at PIT | 22.7 | 11.7 | 11.0 | 1.09 | 0.316 | 21.6 | 5.9 | 15.7 | 0.84 | 0.263 |
| Tyler Chatwood (R) | v CIN | 18.4 | 13.6 | 4.7 | 1.07 | 0.353 | 19.1 | 12.3 | 6.8 | 0.82 | 0.303 |
| Wei-Yin Chen (L) | at WAS | 23.0 | 3.4 | 19.5 | 0.64 | 0.284 | 17.4 | 6.9 | 10.5 | 1.64 | 0.340 |
| Mike Fiers (R) | v TEX | 19.0 | 8.1 | 10.9 | 1.52 | 0.333 | 19.9 | 5.9 | 14.0 | 1.68 | 0.351 |
| Kyle Freeland (L) | at SEA | 27.9 | 6.3 | 21.6 | 0.84 | 0.299 | 13.7 | 9.3 | 4.4 | 1.05 | 0.330 |
| Kevin Gausman (R) | at MIN | 22.6 | 8.6 | 14.1 | 1.26 | 0.318 | 21.6 | 6.0 | 15.6 | 1.55 | 0.348 |
| Kyle Gibson (R) | v BAL | 17.1 | 9.0 | 8.1 | 1.00 | 0.353 | 19.1 | 8.8 | 10.3 | 1.41 | 0.330 |
| Cole Hamels (L) | at DET | 18.6 | 8.6 | 10.0 | 0.71 | 0.265 | 22.2 | 8.8 | 13.4 | 1.37 | 0.324 |
| J.A. Happ (L) | v NYY | 20.9 | 5.3 | 15.6 | 0.69 | 0.249 | 22.9 | 7.8 | 15.2 | 1.20 | 0.305 |
| Matt Harvey (R) | at CHC | 16.1 | 9.2 | 6.8 | 1.71 | 0.386 | 18.5 | 6.6 | 11.9 | 1.16 | 0.316 |
| Edwin Jackson (R) | at CLE | 19.3 | 10.7 | 8.5 | 1.30 | 0.331 | 16.2 | 7.8 | 8.3 | 2.41 | 0.383 |
| Brad Keller (R) | v BOS | 16.0 | 10.7 | 5.3 | 0.00 | 0.252 | 14.1 | 6.7 | 7.4 | 0.24 | 0.263 |
| Corey Kluber (R) | v OAK | 27.4 | 5.9 | 21.5 | 1.01 | 0.265 | 31.0 | 4.3 | 26.7 | 1.00 | 0.251 |
| Carlos Martinez (R) | at SF | 20.1 | 11.6 | 8.5 | 0.97 | 0.323 | 27.0 | 6.5 | 20.6 | 0.72 | 0.264 |
| Steven Matz (L) | v TB | 17.3 | 7.6 | 9.7 | 0.55 | 0.308 | 22.4 | 6.7 | 15.7 | 1.45 | 0.324 |
| Deck McGuire (R) | v LAD | 11.5 | 6.6 | 4.9 | 0.60 | 0.233 | 22.5 | 8.5 | 14.1 | 4.11 | 0.435 |
| Charlie Morton (R) | v CWS | 35.2 | 9.4 | 25.8 | 0.83 | 0.268 | 22.1 | 8.5 | 13.7 | 0.93 | 0.316 |
| James Paxton (L) | v COL | 24.5 | 6.9 | 17.6 | 0.60 | 0.302 | 28.3 | 6.0 | 22.3 | 0.79 | 0.277 |
| David Price (L) | at KC | 19.9 | 4.1 | 15.8 | 0.94 | 0.300 | 24.8 | 7.1 | 17.7 | 1.26 | 0.310 |
| Robbie Ray (L) | v SD | 35.3 | 5.8 | 29.4 | 1.06 | 0.289 | 29.4 | 11.2 | 18.2 | 1.36 | 0.318 |
| Tyson Ross (R) | at ARI | 17.2 | 11.2 | 6.0 | 1.33 | 0.365 | 21.1 | 11.0 | 10.1 | 1.02 | 0.305 |
| Jeff Samardzija (R) | v STL | 22.0 | 6.6 | 15.4 | 1.43 | 0.334 | 21.2 | 5.2 | 16.0 | 1.00 | 0.286 |
| Anibal Sanchez (R) | at MIL | 22.6 | 9.0 | 13.7 | 1.50 | 0.334 | 19.4 | 5.7 | 13.7 | 2.13 | 0.373 |
| Max Scherzer (R) | v MIA | 27.4 | 8.6 | 18.8 | 1.36 | 0.304 | 40.7 | 4.2 | 36.5 | 0.71 | 0.199 |
| Luis Severino (R) | at TOR | 28.1 | 7.7 | 20.4 | 0.96 | 0.282 | 27.8 | 6.0 | 21.8 | 0.84 | 0.266 |
| James Shields (R) | at HOU | 15.6 | 11.6 | 4.1 | 1.79 | 0.352 | 18.9 | 8.3 | 10.7 | 1.70 | 0.344 |
| Blake Snell (L) | at NYM | 28.3 | 10.1 | 18.2 | 0.14 | 0.231 | 23.8 | 11.2 | 12.7 | 1.06 | 0.312 |
| Ross Stripling (R) | at LAA | 24.0 | 6.3 | 17.8 | 0.80 | 0.266 | 22.2 | 5.5 | 16.7 | 1.21 | 0.319 |
| Jameson Taillon (R) | v PHI | 16.7 | 8.7 | 8.0 | 0.95 | 0.337 | 25.5 | 4.4 | 21.1 | 0.95 | 0.299 |
| Aaron Wilkerson (R) | v ATL | 11.1 | 0.0 | 11.1 | 0.00 | 0.234 | 23.5 | 2.9 | 20.6 | 2.16 | 0.311 |
