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House Rules Comparison

Level: Advanced
Updated: Aug 25, 2023
4 min read

Key Takeaways

Warning

This guide does not cover all the house rules that can impact your MLB bets. Here are some that are not covered. There may be others.

  • Weather delays/postponements
  • Shortened games
  • Batter prop: opposing pitcher change
  • Same Game Parlays (SPG) may be treated differently than straight bets. This guide is only designed for straight bets.

Some sportsbook's house rules mention both action and listed pitcher, but they may not offer both markets. Be sure you understand which market you select, and the specific house rules for that market.

Introduction

The comparison tables below are a high-level starting point on how different sportsbooks may handle different MLB markets. Refer to the sportsbooks’ house rules to be certain. You can lower your risk by hedging your bet and choosing a hedge sportsbook with similar house rules as your primary sportsbook.

Please contact us at support@darkhorseodds.com if you notice any errors or discrepancies.

Read these guides first:

The term “pitching change” in this guide means a change to the listed starting pitcher before the game.

Money line Action

This table lists what happens to your odds on an already-placed Money line Action bet when there is a pitching change.

  • Yes: House rules state that the odds will change.
  • No: House rules state that the odds will not change.
  • May Change: House rules state that the odds may change.
  • Does Not Specify: House rules do not state if the odds change when there is a pitching change. Seems to imply that they will not change.
  • Not Offered: Money line Action bets do not appear to be offered, only Listed Pitcher.
SportsBook Will The Odds Change
888sport Does Not Specify
Action 247 Does Not Specify
Barstool No
bet365 No
Bet Fred Yes
betJACK No
Betly Does Not Specify
Bet Rivers No
Bet Way Does Not Specify
Caesars Does Not Specify
Circa Yes
Desert Diamond Yes
DraftKings No
DRF No
Eagle No
FanDuel No
FireKeepers May Change
Four Winds No
Golden Nugget Does Not Specify
Gun Lake No
Hard Rock Does Not Specify
LeoVegas No
MGM Does Not Specify
Northstar Does Not Specify
betParx No
Pinnacle No
Play Maverick Does Not Specify
PointsBet Not Offered
Prophet Exchange No
Resorts World Not Offered
Sahara Bets Does Not Specify
Sports Illustrated Does Not Specify
Sporttrade Does Not Specify
Sugar House No
SuperBook Does Not Specify
Tipico Does Not Specify
TwinSpires No
Unibet No
Wind Creek Yes
Wynn No

Run / Total / Alt Lines

This table lists what happens to your odds on an already-placed Run/Total/Alt Line bet when there is a pitching change.

Is The Bet Action?

  • Yes: House rules state that the bet is Action (will not void).
  • No: House rules state that the bet is No Action (void).
  • Unclear: House rules state the bet will be No Action (void) if there is a pitching change, however, the bet does not have Listed Pitchers. This house rule might not apply, resulting in the bet being Action (will not void).
  • Does Not Specify: House rules do not state what happens if there is a change to the starting pitcher.
  • Not Offered: Action bets do not appear to be offered, only listed pitcher.
  • Action If No Listed Pitcher: House rules state the bet is Action (will not void) if there is not a Listed Pitcher stated.
  • Appears To Be Action: House Rules state listed pitcher must start, however, the bet slip typically shows “Action”.

Will The Odds Change?

  • Yes: House rules state that the odds will change.
  • No: House rules state that the odds will not change.
  • Does Not Specify: House rules do not state if the odds change when there is a change. Seems to imply that they will not change.
  • N/A: Not Applicable because the bet is No Action (void).
SportsBook Is The Bet Action Will The Odds Change
888sport Unclear Does Not Specify
Action 247 No Does Not Specify
Barstool Yes No
bet365 Yes No
Bet Fred Unclear Does Not Specify
betJACK Yes No
Betly Unclear Does Not Specify
Bet Rivers Yes No
Bet Way Yes Does Not Specify
Caesars Yes Does Not Specify
Circa Does Not Specify Yes
Desert Diamond Yes No
DraftKings Yes No
DRF Yes No
Eagle Yes No
FanDuel Yes No
FireKeepers Unclear Does Not Specify
Four Winds Yes No
Golden Nugget Action If No Listed Pitcher Does Not Specify
Gun Lake Yes No
Hard Rock Yes Does Not Specify
LeoVegas Yes No
MGM Does Not Specify Does Not Specify
Northstar Yes No
betParx Yes No
Pinnacle Yes Yes
Play Maverick Yes Does Not Specify
PointsBet Not Offered N/A
Prophet Exchange Yes Northstar
Resorts World Not Offered N/A
Sahara Bets Yes Does Not Specify
Sport Illustrated Unclear Does Not Specify
Sporttrade Yes Does Not Specify
Sugar House Yes No
SuperBook Yes Does Not Specify
Tipico Action If No Listed Pitcher Does Not Specify
TwinSpires Yes No
Unibet Yes No
Wind Creek Unclear Does Not Specify
Wynn Action If No Listed Pitcher No

Player Props

This table lists how different sportsbooks treat different player prop bets. This is not an exhaustive list of house rules that affect player props.

Pitcher Prop - What Defines Action?

  • Must Start: Must be the starting pitcher.
  • Must Throw One Pitch: Must throw one pitch, does not have to be the starting pitcher.
  • Must Play An Active Role/Must Participate: Not clearly defined. Assumed that they must throw one pitch.
  • Does Not Specify: House rules do not state when a pitcher prop is action.
  • Starter/Reliever: If the bet is on a starting pitcher must start and throw one pitch. If the bet is on a reliever, they must throw one pitch at any point.
  • Enter The Game: The pitcher must enter the game at any point. Does not mention having to throw a pitch or start.

Batter Prop - What Defines Action?

  • Must Start: The player must be in the starting lineup. Unclear if the bet is Action or No Action if the batter starts but never has a plate appearance.
  • Start And Plate Appearance: The player must start and make one plate appearance.
  • Must Play An Active Role/Must Participate: Not clearly defined. Unclear if they play defense, but do not have a plate appearance if the bet is Action or No Action.
  • One Plate Appearance: The player does not need to start, they only need to make a plate appearance.
  • Does Not Specify: House rules do not state when a batter prop is action.
SportsBook Pitcher Props-What Defines Action Batter Props-What Defines Action
Action 247 Must Start Must Start
888sport Does Not Specify Does Not Specify
Barstool Must Throw One Pitch Start And Plate Appearance
bet365 Must Start 1 Plate Appearance
Bet Fred Does Not Specify Does Not Specify
betJACK Must Throw 1 Pitch 1 Plate Appearance
Betly Enter The Game 1 Plate Appearance
Bet Rivers Must Play An Active Role Must Play An Active Role
BetWay Must Start Start And Plate Appearance
Caesars Does Not Specify Does Not Specify
Circa Does Not Specify Does Not Specify
Desert Diamond Must Play An Active Role Must Play An Active Role
DraftKings Must Start Start And Plate Appearance
DRF Must Play An Active Role Must Play An Active Role
Eagle Must Play An Active Role Must Play An Active Role
FanDuel Must Start 1 Plate Appearance
FireKeepers Must Start Must Start
Four Winds Must Play An Active Role Must Play An Active Role
Golden Nugget Must Play An Active Role Must Play An Active Role
Gun Lake Must Play An Active Role Must Play An Active Role
Hard Rock Must Start Must Start
LeoVegas Must Throw 1 Pitch Must Start
MGM Must Throw 1 Pitch 1 Plate Appearance
Northstar Must Play An Active Role Must Play An Active Role
betParx Must Play An Active Role Must Play An Active Role
PinnacleMust Throw 1 PitchStart And Plate Appearance
Play MaverickDoes Not SpecifyDoes Not Specify
PointsBetMust StartMust Start
Prophet ExchangeMust Start1 Plate Appearance
Resorts WorldMust StartMust Start
Sahara BetsDoes Not SpecifyDoes Not Specify
Sports IllustratedDoes Not SpecifyDoes Not Specify
SporttradeDoes Not SpecifyDoes Not Specify
Sugar House Must Play An Active RoleMust Play An Active Role
SuperBook Must StartMust Start
Tipico Must StartMust Start
TwinSpires Must Play An Active RoleMust Play An Active Role
Unibet Must Play An Active RoleMust Play An Active Role
Wind Creek Does Not SpecifyDoes Not Specify
Wynn Must StartMust Start
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