Dodgers Simulation, October 2nd
I used my simulator to simulate 50000 baseball games between the Rockies and Dodgers using what to the best of my knowledge will be close to today's starting lineups. The simulator outputs a win probability for each team, along with the average total runs scored, a distribution matrix of all the final scores and how often they occurred, and an averaged box score tally of all games combined. You may find it strange that there are so many one run games listed as the most likely score, and that the home team is always favored to win in the top couple of scores. This is due to basic math and the way that baseball rules play out of having the home team bat last. Here is a great article explaining this phenomenon. For your viewing pleasure I have also listed a few other games of local interest.
Today's Results... (Last simulation ran at 930PM)
| Visitors | Home | Pitching Matchup | Favorite | Vegas Win Prob | Simulator Win Prob | AccuScore |
| COL | LAN | U.Jimenez vs R.Wolf | LAN | 50.98% | 56.46% | 71% |
Skinny: Simulator Fun Facts... Quite a bit of variety on tonight's game. Vegas thinks it's a tossup game, my simulator has the Dodgers as moderate favorites and AccuScore seems to be asleep at the wheel. 71% win probability against Ubaldo Jimenez? I don't think so. My guess is they made a mistake and will chop off about 10-15% off of the Dodgers win probability later on today when they realize that the Rockies team plane was indeed not hijacked and flown to Somalia.
Even though the Rockies now control their own destiny and can win the NL West with a three game sweep of the Dodgers, the odds are still heavily in the Dodgers favor for winning the division. I have simulated each of the three remaining games. Though there is some "guess work" as far as what the starting lineups may be, this is still the best way for determining the chances for winning the division. I have used the following three pitching matchups (Jimenez vs Wolf, de la Rosa vs Kershaw, Marquis vs Padilla). The odds of the Dodgers winning the NL West using my simulation outputs are
Going into fridays game: 1 - (0.4354 x 0.369 x 0.432) = 93.06%
If we lose fridays game: 1 - (0.369 x 0.432) = 84.06%
If we lose fri/sat games: 56.80%
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Top 20 Most Likely Scores |
|
| 1 | LAN 3-2 |
| 2 | LAN 4-3 |
| 3 | LAN 2-1 |
| 4 | LAN 5-4 |
| 5 | COL 3-2 |
| 6 | COL 4-3 |
| 7 | LAN 3-1 |
| 8 | LAN 4-2 |
| 9 | LAN 6-5 |
| 10 | COL 2-1 |
| 11 | LAN 5-2 |
| 12 | COL 4-2 |
| 13 | LAN 4-1 |
| 14 | COL 5-3 |
| 15 | COL 3-1 |
| 16 | COL 5-4 |
| 17 | LAN 5-3 |
| 18 | LAN 1-0 |
| 19 | LAN 2-0 |
| 20 | COL 5-2 |
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Game Pitching Results |
||
| Pitcher | WHIP | FIP |
| U.Jimenez | 1.437 | 3.356 |
| R.Wolf | 1.301 | 3.599 |
Note: Keep in mind I did this simulation before knowing the actual starting lineups, so some of the players I used may not be starting. Many of the "Players Most Likely To" stats depend on having the correct lineup. The lineups I used are listed below. Chances are you won't see a big difference in win probability from having the lineup order slightly off. Picking the correct starters is more important, especially if one of the better players is taking the day off. But you still won't see a big change in win probability if the starter and backup are interchangeable.
| Simulation Lineups | ||
| 1 | D.Fowler | R.Furcal |
| 2 | R.Spillborghs | O.Hudson |
| 3 | T.Helton | A.Ethier |
| 4 | T.Tulowitzki | M.Ramirez |
| 5 | G.Atkins | M.Kemp |
| 6 | C.Iannetta | J.Loney |
| 7 | B.Hawpe | C.Blake |
| 8 | C.Barmes | R.Martin |
| 9 | U.Jimenez | R.Wolf |
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Comments
Vegas's numbers are skewed because of the momentum
and its perceived value affect bets and I’m sure they know it.
Maybe Accuscore is calculating travel-hangover correction factors.
You’re right on the money. Vegas isn’t in the business of picking winners. The role of the oddsmakers is to entice an equal number of bets on both sides. As you mention, the general betting public is influenced by recent performance.
by Michael White on Oct 2, 2009 10:33 AM PDT up reply actions
Odds as of 130PM
Money line is -104/-104 “Even money”.
AccuScore now has the Dodgers at 58%, just what I thought they’d do. :)
vr, Xei
I will be very surprised if Iannetta gets the start for the Rox tonight.
He has been used sparingly and played yesterday. Iannetta probably makes the Rockies a stronger team mathematically, but Torrealba has been on fire.
SWEEP L. A.
Because somebody's got to clean it, that place is filthy ;-)
Ok, I just re-simmed @ 100K games with tonight’s correct lineups.
Dodgers win probability on the simulator went up a little bit with the lineup changes, but not by much. The simulator now says the Dodgers have a 58.23% chance of winning. The other two sources are…
Vegas ML: LAN -109, COL +101 (LAN 51.22%)
AccuScore: LAN 58%
Simulator and AccuScore are in good agreement. The betting public thinks not.
vr, Xei

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