Francisco Alvarez #4 of the New York Mets runs to first base during a game against the Los Angeles Dodgers at Dodger Stadium on April 13, 2026 in Los Angeles, California. Getty Images Two of baseball ‘s bottom dwellers pay a visit on Saturday in the Mets and Angels. You can play DFS for Mets vs. Angels at Underdog with the welcome offer of Play $5 and get $50 in fantasy bonus entries .  Nolan McLean (1-2, 2.55 ERA) will take the hill against Reid Detmers (2-1, 4.28 ERA) for the first pitch at 9:38 p.m. ET. The Mets are slightly favored at -117 on the moneyline with a run line set at 8. Underdog promo code NYPOST for Mets vs. Angels With the  Underdog promo code NYPOST , first-time fantasy users on the platform are granted a worthwhile welcome offer at sign-up:  Play $5, get $50 in fantasy bonus entries . Underdog is a daily fantasy sports (DFS) leader that offers a wide range of player prop options.…