Big Foot

With Superbowl LVII this weekend wrapping up the NFL season this evening, attention turns to baseball with Spring Training for the 2023 MLB season starting in less than three weeks. The Regular Season opens on March 29th, but significant changes to the 162 game schedule means that the usefulness of some of the data from previous seasons is, at best, questionable. 

Since the Divisions were increased to six in 1994 , almost half of a team's schedule was matches against a divisional opponent with playing up to 20 games a season against each of them. That all changes in 2023 with every one of the 30 teams playing against the other 29 during the season and the number of divisional games dropping from 76 to 52. Interleague games see the biggest increase, with teams going from 20 matchups to 46.

As I've written before, with the universal adoption of the Designated Hitter (DH) rule, there's no longer any difference between the American League and the National League and rumours are that MLB may be headed to a 32 team league with eight divisions of four teams as is the case with the NFL.

For comparison, the NBA currently has 30 teams (six divisions of five teams) and the NHL has four divisions of eight teams.

In addition to completely revamping the schedule, there are some significant rule changes regarding the introduction of a pitch clock, (including a limit on pickoff attempts), restrictions on defensive shifting, and the introduction of larger bases - one of the justification for the latter being that "players' feet are much bigger now than when the bases were designed". The famous 90 feet between bases is no more.

These rule changes should all result in higher scoring. The larger bases and pitch clock will make it easier for players to steal bases, and the shift changes will mean that "more balls will find open spots leading to a higher batting average on balls in play and more action on the field."

As for the change in schedules, the data (courtesy of Killer Sports) shows how there are big differences in outcomes depending on whether a match is a divisional game, an inter-league game or a non-divisional intra-league game.

For example, blindly backing all road favourites in regular season games against an opponent they beat in the previous game gives a losing ROI of -2.5% from almost 14,000 games, but in inter-league games where the selection is an American League team (i.e. playing without a DH) the ROI is 7.7%. Such discrepancies are likely to no longer exist in the future since most of this data is from the days when the leagues had different DH rules so the performance of National League teams is somewhat redundant. Yes, when they would play in an American League park, they would play AL rules, but with relatively few such games in their schedules, this wasn't something they were too focused on.

Back to the Superbowl and good luck if you think you can find an edge on the biggest game in the US sports calendar. The last NFL game I saw live was a Monday Night game in Philadelphia (vs. the Green Bay Packers) with my son so I shall be supporting the Eagles for the second time this weekend. My money is on them giving 1.5 points as my gut tells me they should win by a lot more, but as I said, it's highly unlikely I have any edge on this game.