The lengthy MLB season can cause some games to get lost in the shuffle, but MLB.TV provides fans with a Free Game of the Day throughout the regular season that can also be seen on FanDuel TV+ here, or also available on Apple TV, Roku, Android TV, Fire TV, and FanDuel Sportsbook.

Why not add to the viewing excitement by getting in on the MLB odds over at FanDuel Sportsbook?

For this article, we've got you covered with a betting guide for each Free Game of the Day. With that, let's take a look at some of the best bets for today's free game.

Note: Lines are subject to change throughout the day after this article is published. All stats come from FanGraphs and Baseball Savant unless noted otherwise. Please check here to make sure you're seeing the most updated projections.

MLB Betting Picks

Mariners vs. Athletics Betting Odds: Spread, Total, and Moneyline

• Time: 9:40 p.m. ET
• Spread: Mariners -1.5 (+104)
• Total: 7.5
• Moneyline:
  • Mariners: -166
  • Athletics: +140

Best Bet

Under 7.5 Runs (+100)

The Seattle Mariners (34-27) and Oakland Athletics (24-37) will kick off a three-game series this evening, and the under may be the way to go for a pair of low-producing teams.

George Kirby will be on the bump opposite Oakland. He comes in with a 4.08 ERA through 12 starts, but his underlying numbers are solid, including a 3.56 xERA, 3.39 xFIP, 3.32 SIERA, and 1.02 WHIP.

The A's are slamming 1.2 home runs per game (fifth-most) but show concerning overall numbers against righties. Coming into the night, they own a .224 BA (24th), .372 SLG (20th), .301 wOBA (21st), and 26.5% K% (3rd-worst) versus right-handed pitchers.

Past Kirby, Seattle's bullpen sports a 3.62 ERA (12th), 3.76 xFIP (6th), 3.35 SIERA (5th), 0.84 HR/9 (9th), and 25.1% K% (5th).

Look for Kirby and Seattle's relief to piece together a quiet night for Oakland's bats, who are averaging just 3.79 runs per game (27th).

Mitch Spence will get the ball for Oakland. The first-year major-leaguer has predominantly pitched in relief but has made three straight starts for the Athletics.

Overall, Spence has managed a 3.52 ERA, 3.17 xERA, 3.56 SIERA, 0.70 HR/9, and 22.1% K%. In three starts, his combined stat line includes 13 IP, 3 ER, and 12 Ks.

He's off the heels of throwing 5 1/3 scoreless innings wherein he allowed just one hit, and I like his chances to keep it up against an abysmal Seattle lineup.

The Mariners are generating a .221 BA (29th), .359 SLG (27th), .294 wOBA (27th), 95 wRC+ (22nd), and a 28.5% K% (highest) versus right-handed pitchers.

Oakland's relief enters with a 3.42 ERA (5th), 3.79 xFIP (7th), 3.49 SIERA (11th), and 0.72 HR/9 (4th). Seattle is scoring only 3.77 runs per game (28th), so I'm happy to back the even-money odds on the under based on what we've seen from both sides.

Best Prop

Each Starting Pitcher 1+ Strikeout in the First Inning - Yes (+122)

You won't find many teams that strike out against righties more than Seattle (28.5% K%; highest) and Oakland (26.5% K%; third-highest).

With a pair of northpaws set to lead things off for each side, it could be worthwhile to take advantage of these +122 odds.

Kirby comes in with an overall 23.3% K% and a 25.0% K% through the first order. He's recorded at least one first-inning strikeout in 10 out of 12 starts.

Brent Rooker, who is expected to bat third for Oakland, could be a punchout victim. He owns a whopping 34.0% K% against righties. JJ Bleday, who bats second, could be an easy target, too, as Kirby sports a resounding 29.6% K% versus lefties.

Spence has a 22.1% K% and has recorded at least one first-inning strikeout in two of his three starts. As a starter, five of his nine first-inning outs have come via a punchout.

J.P. Crawford (24.8% K%), Dylan Moore (27.7% K%), Julio Rodriguez (27.9% K%), and Cal Raleigh (35.7% K%) are expected to round out the top of Seattle's batting order, and their K rates versus righties speak for themself.

The path to a first-inning K seems pretty clear for both pitchers, and the +122 odds on this prop are far more interesting to me than either thrower's overall strikeout prop.

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The above author is a FanDuel employee and is not eligible to compete in public daily fantasy contests or place sports betting wagers on FanDuel. The advice provided by the author does not necessarily represent the views of FanDuel. Taking the author's advice will not guarantee a successful outcome. You should use your own judgment when participating in daily fantasy contests or placing sports wagers.