MLB Prediction Apps: $100+ Bonuses for Monday Slate

Starting the MLB week with a little extra cash feels like a built‑in advantage. Prediction‑market apps have taken the baseball world by storm, offering fresh ways to engage with daily line‑ups and odds. Right now the market is spilling over $100 in sign‑up bonuses, giving fans a solid bankroll before the first pitch.

Top MLB Prediction Apps and Their Sign‑Up Bonuses

• Kalshi – Use code TSN15. Deposit at least $1 and trade $10 to unlock a $15 bonus.
• Polymarket – Apply TSNEWS. A $20 deposit nets a $50 bonus.
• Novig – Enter TSNEWS50. Spend $25 in trades and receive 50 Novig Coins.
• ProphetX – Input TSNEWS. Trade $10 and claim a $20 bonus.
• OG.com – No code required. Trade $10 and instantly get a $10 bonus.

How to Activate Each Bonus

All five platforms open their doors to new users through a simple registration flow. After signing up, you’ll fund your account with the minimum amount noted in each promo. Once the qualifying trade amount is reached, the bonus credits automatically—ready to be used on any market you choose.

Because these promotions are state‑wide, they’re accessible in every MLB‑watching market, provided you’re 18 or older. The quickest way to start earning is to pick a platform, apply its code, and execute the required trade within the first 24 hours.

Monday’s Key MLB Match‑Ups and Probabilities

Strategic Picks Using Your Bonus Funds

With extra capital unlocked, a logical first play is to back the heavy favorite, the Milwaukee Brewers, against the New York Mets. A $10 stake on the Brewers yields roughly $4.63 in profit, a modest but safe return.

If you’re looking for higher upside, the Mets represent the biggest underdog on the slate. The same $10 wager on New York can pull in about $17.70 if they pull off the upset.

Beyond those two games, the Los Angeles Dodgers present an intriguing value proposition versus the Philadelphia Phillies. The Dodgers boast a .260 team batting average—well above Philadelphia’s .236—while their pitching staff posts a 3.49 collective ERA compared with the Phillies’ 4.21 mark. This performance gap suggests a realistic chance for the underdog Dodgers (+116) to out‑perform expectations.

In short, the current bonus landscape turns Monday’s MLB slate into a testing ground for new prediction‑market tactics. By leveraging the $100+ in incentives, you can experiment with favorites, underdogs, and crosstown matchups without risking much of your own cash.