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Betting Predictions for Saturday, May 31: Choosing MLB Games on the Basis of Betting Bias, Power Values, and Trends

MLB Betting Trends: Steve Makinen and the VSiN Analytics team reveal essential patterns for your wagers on May 31.

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MLB Betting Trends for Saturday, May 31: Details provided by Steve Makinen and the VSiN Analytics...
MLB Betting Trends for Saturday, May 31: Details provided by Steve Makinen and the VSiN Analytics team.

As sports enthusiasts prepare for another exciting day of Major League Baseball, VSiN (Vegas Stats & Information Network) offers a collection of betting trends, systems, and strength ratings for today's games. Analysts have reviewed each contest and identified numerous factors that may influence the outcome.

Key Resources

A diverse range of resources are at your disposal when navigating today's MLB betting landscape. These resources include:

  • Today's MLB Games
  • Parlay Calculator
  • Greg Peterson's MLB Daily Lines
  • MLB Odds
  • MLB Betting Splits

AJ's Angles

Leading analyst AJ Makinen has handpicked the top MLB betting trends and systems for today's games. Key highlights include:

  • The Baltimore Orioles participate in a favorable trend, boasting a record of 30-13 (+13.88 units) in home games with starter Dean Kremer over the past two seasons. Bettors might consider wagering on the Orioles, who are listed as -175 favorites against the Chicago White Sox.
  • Conversely, the Minnesota Twins exhibit a losing trend when starter Bailey Ober is on the mound and the line falls between -105 to -125, with a record of 7-14 (-9.18 units) in the last four seasons. Today, the Twins will face the Seattle Mariners as -108 underdogs.
  • Two beneficial bullpen systems emerge:
  • Teams with superior bullpens on 3+ game losing streaks have thrived, posting a 281-194 record (+48.02 units, ROI: 10.1%) since 2023. Backing the Arizona Diamondbacks, who are listed as -198 favorites against the Washington Nationals, would represent a viable play under this system.
  • Conversely, teams scoring 5.0 or more runs per game and on a four-game winning streak are struggling to maintain their momentum, with a losing record of 105-114 (-51.44 units, ROI: -23.5%) in the subsequent contest since 2021. As such, the Detroit Tigers, who are identified as -192 favorites against the Kansas City Royals, may not be the best play under this system.

MLB Bullpen Systems

Utilizing Steve Makinen’s bullpen strength ratings, various bullpen-related systems have demonstrated success:

  • Teams with an even or worse record on the season but showing a better Steve Makinen Bullpen Rating and starting pitcher rating have shined, producing a record of 76-46 (+19.03 units, ROI: 15.6%) since the start of the season. In today's action, teams such as the Atlanta Braves and Arizona Diamondbacks, both listed as -185 favorites in their respective contests, represent potential plays under this system.
  • Fading better bullpen overpriced favorites of -190 or higher when the win percentage difference of teams is less than 19% has been a profitable strategy, with a 307-182 record (-118.22 units) since the start of 2023. However, teams with this profile have not kicked off the 2025 season as expected, posting a 47-17 record (+9.03 units). Today's Detroit Tigers-Kansas City Royals matchup is listed as an example of where this system may prove useful.
  • Backing big favorites (-190 or more) with better bullpen ratings and a winning percentage greater than 19% higher than the opponent has been a consistent winner, with a 252-103 record (+8.01 units) since 2023. Two flagship teams in this category include the New York Mets and San Diego Padres, both listed as substantial favorites in their respective games.
  • Better bullpen underdog teams have shown profitability when faced as money line underdogs or picks, generating a 701-790 record (+46.27 units) over the last two seasons. In today's action, the Texas Rangers, Milwaukee Brewers, Minnesota Twins, and New York Yankees should be considered when taking this system into account.

Strategies Using DraftKings Betting Splits Data

Assessing DraftKings betting splits can provide sports bettors with valuable insights. In an analysis conducted prior to opening day, VSiN analyst Steve Makinen outlined ten different systematic strategies for utilizing DraftKings data that exhibited success in the 2023/2024 season:

  • Bettors have experienced improved results across a majority of categories during the 2024 season compared to the 2023 results:
  • Majority handle on sides: 56.2%, -129.73 units, ROI: -5.3%
  • Majority number of bets on sides: 57.3%, -129.28 units, ROI: -5.3%
  • Majority handle on run lines: 48.4%, -108.79 units, ROI: -4.5%
  • Majority number of bets on run lines: 47.6%, -97.78 units, ROI: -4.0%
  • Majority handle on totals: 51.3%, -52.9 units, ROI: -2.3%
  • Majority number of bets on totals: 51.4%, -47.1 units, ROI: -2.0%
  • If adopting the use of the betting splits in 2025, bettors may wish to consider fading majorities unless shown otherwise by a profitable follow-angle.
  • A handful of specific MLB betting splits systems have proven successful in the past and may continue to do so in 2025.
  • System #1: When 90% or more of the handle was on the home side of an MLB money line wager since the start of the 2023 season, this "super" majority group has fared well, going 200-83 (70.7%) for +35.78 units and an ROI of +12.6%.
  • System #2: Majority bets groups have been relatively successful when the majority percentage figure of bets does not exceed 60%. In terms of the 2024 season, these groups went 431-381 (53.1%) for -4.6 units and an ROI of -0.6%.
  • System #3: Majority handle bettors have performed well when backing home favorites of -250 or higher. Over the past two seasons, this group has produced a 194-62 (75.8%) record for +13.5 units and an ROI of +5.3%.
  • System #5: Majority handle bettors have struggled in interleague games, going 716-658 (52.1%) but for -140.34 units since the start of 2019.
  • System #6: Teams with fewer wins who are favored due to playing at home or boasting a better starting pitcher have struggled, with a 226-228 (48.3%) record for -105.41 units since 2019.

Final Notes

In conclusion, the MLB landscape on May 31, 2025, offers several favorable trends, strategies, and systems applicable to today's slate of games. Given the wealth of information at sports bettors' disposal, it is essential to consider these trends and systems as potential options when evaluating wagers. By adopting a careful and analytically-driven approach, sports enthusiasts can optimize their betting experience and potentially yield attractive returns.

  • Bettors considering wagers on theMLBon May 31, 2025, mayfind theBaltimore Orioles, listed as -175 favorites against theChicago White Sox, to be a favorable option, given their 30-13 (+13.88 units) record in home games with starter Dean Kremer over the past two seasons.
  • In the MLB game between the Minnesota Twins and Seattle Mariners, considering a wager against the Twins, who are -108 underdogs, might be advisable due to their 7-14 (-9.18 units) losing record when starter Bailey Ober is on the mound and the line falls between -105 to -125 in the past four seasons.
  • For bettors seeking to target teams with superior bullpens on 3+ game losing streaks, the Arizona Diamondbacks, listed as -198 favorites against the Washington Nationals, could be a viable play, as this system boasts a profitable record of 281-194 (+48.02 units, ROI: 10.1%) since 2023.
  • Important trends and systems, such as utilizing Steve Makinen’s bullpen strength ratings, AJ Makinen's top MLB betting trends and systems, analyzing DraftKings betting splits data, and MLB Betting Trends for May 31, 2025, can provide sports bettors valuable insights, ultimately potentially yielding attractive returns.

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