Looking for the best Underdog Fantasy MLB picks today? Fantasy Alarm digs into Saturday's top Higher/Lower selections so you can build a winning pick'em entry on today's MLB slate. Check out Fantasy Alarm's Underdog MLB picks page for expert projections and matchup breakdowns all season long. Here are the top Underdog Fantasy MLB picks for Saturday, April 18, 2026.

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Corbin Carroll Underdog MLB Pick'em — Higher 2.5 Hits+Runs+RBI

Carroll is one of the hottest hitters in the National League to open 2026, posting a 1.067 OPS with a .430 wOBA and a 43.2 percent hard-hit rate. He contributes across all three categories of this prop on a regular basis through his combination of contact, speed, and power.

The matchup today is as good as it gets. Scherzer carries an 8.53 ERA against left-handed hitters in 2026 per splits data, with a .387 wOBA and a .280/.367/.520 slash line allowed. His strikeout rate against lefties drops to 16.7 percent this season, a significant drop from his best work against right-handed hitters. Scherzer is also managing forearm tendinitis that cut his last outing short. This is the right time to target him. Higher than 2.5 Hits+Runs+RBI is a play grounded in both Carroll's form and the platoon vulnerability Scherzer has shown all season.

 

 

 

Ryan Feltner Underdog MLB Pick'em — Higher 3.5 Earned Runs

Feltner enters today at 1-1 with a 7.30 ERA, having allowed 10 runs across 12.1 innings in three starts. The higher has hit in each of his last two outings. Now, he faces the Dodgers at Coors Field; the worst possible combination for a pitcher already this compromised.

Feltner carries a career 5.87 home ERA. Coors Field inflates run environments by roughly 40 percent, and the Dodgers are one of the deepest offensive teams in the National League. He does not miss enough bats to work around traffic and does not command the strike zone well enough to avoid putting runners on. The higher has cashed back-to-back starts. Against this lineup, at this ballpark, the trend is not reversing. Higher than 3.5 Earned Runs is the play.

 

 

 

Build Your Underdog Pick'em Entry Today

Carroll exploiting Scherzer's .387 wOBA against lefties, and Feltner facing the Dodgers at Coors with a 7.30 ERA, give you two well-grounded picks for Saturday. Sign up with promo code ALARM and grab your $50 bonus before first pitch.