April has traditionally been an above average month for baseball underdogs. Going back to the start of the 2004 season, betting every underdog would have yielded a 1983-2482 record and a profit of $4803. That’s definitely better than the flat-bet loss of $27,000 that favorite bettors would have amassed over the same period of time.
But if you were to look at those games where the total is 10 or higher, you’d have essentially the same profit, but a much better return on risk, as those games have gone 233-250, good for a profit of $4,722. The big difference is obviously in the amount of money risked. The return on risk when betting on all underdogs is 1.1%, while it’s nearly 10% (9.8%) by betting the underdogs in those games with high totals.
In 2014 through 2016, these games have gone 16-13 and have yielded a return of 18.3%. There have been no plays so far in 2017.
Underdogs fare better in games with high totals, but they tend to do even better right out of the gate and is something worth watching during the opening month of the season.