MLB odds, lines, picks, predictions for Tuesday, March 31: MLB longshot parlay returns +10000000

All but two MLB teams are in action on Tuesday, with 14 games providing ample opportunities to form an MLB parlay. But why stop there, as one could form an MLB longshot parlay with the hopes of a huge return. From money line picks to home run props to alternate lines, there are several plus-money MLB picks one could seek out. Some of the top games today include Angels vs. Cubs (-146), Red Sox vs. Astros (-149) and Mariners vs. Yankees (-112).

Max Fried will take the mound for New York after going 6.1 scoreless innings on Opening Day. If you think another shutout performance is in order for Fried, then backing 0 ER allowed would result in a +290 payout. That could be a standalone MLB bet, or it could be one leg of a lucrative baseball longshot parlay.

Before locking in any MLB bets or parlays, make sure you see what SportsLine's advanced computer model has to say. 

The SportsLine Projection Model simulates every MLB game 10,000 times. It was a profitable 35-29 on top-rated MLB money-line picks last season. It also excelled at making home run prop picks in 2025, returning nearly 30 units of profit. Anybody following could have seen strong returns!

The model has evaluated the Tuesday MLB odds and locked in seven confident MLB best bets. If you successfully parlay them you'd be looking at a big payout of over +1000000.

One pick we'll give away: The model is backing Over on the alternate total of 9.5 (+247) in Yankees vs. Mariners at 9:40 p.m. ET. The official O/U is 7 runs, but the model projects 9.5 combined runs, giving value to this plus-money MLB bet.

The model has also locked in six more strong picks, including a pair of home run props that return around +400 each in a longshot parlay that pays $1 million on just a $10 bet! You ABSOLUTELY need to see it right now.

So what are the MLB best bets for Tuesday's longshot parlay that could unlock a payday of $1 million on just a $10 bet? ... Join SportsLine now to see who wins and covers every single MLB game this week, all from the model that returned nearly 30 units in profit on home run props last season!