MLB Best Player Props Today – September 19th, 2025

We’re back with a jam-packed slate on Friday, featuring plenty of exploitable matchups to target for MLB player props today. We’re going with three pitcher props for this evening. Today’s bets feature three strikeout props.

We’ll start with Toronto Blue Jays’ veteran Max Scherzer against the Kansas City Royals. Then, we’ll move on to Arizona Diamondbacks’ righty Ryne Nelson vs. the Philadelphia Phillies. Finally, we’ll fade the San Francisco Giants’ lefty Robbie Ray as he takes on the Los Angeles Dodgers.

Keep reading to find my best MLB player props for September 19, 2025.

Note: Odds were correct at the time of writing.

Max Scherzer Under 4.5 Strikeouts (+105) at bet365

Scherzer has been rock-solid for the Blue Jays, registering a 4.31 ERA and 1.16 WHIP with 22 walks and 75 strikeouts in 79.1 innings.

The veteran righty has gone over 4.5 strikeouts in three of his last four outings, but I’m fading him in this spot against the Royals.

Kansas City is tough to strike out, especially at home, where they’ve put up an 18.3 K%, which ranks 3rd in MLB.

While it’s a low bar at 4.5, I like that we’re getting this at +105 at bet365, since this is minus odds everywhere else, including -107 at DraftKings.

Odds Comparison for Max Scherzer Under 4.5 Strikeouts

Sportsbook	Odds
bet365	+105
FanDuel	-104
Caesars	-104
Hard Rock Bet	-105
DraftKings	-107

Ryne Nelson Under 4.5 Strikeouts (+115) at bet365

Nelson has been a nice surprise for the Diamondbacks, posting a 3.34 ERA and 1.06 WHIP with 39 walks and 122 strikeouts in 143 innings.

While he’s been able to go at least six innings in six consecutive outings, he’s only racked up five or more strikeouts in two of those outings.

That bodes well for this under, especially against a tough Phillies lineup that has put up the ninth-lowest strikeout rate in MLB this season.

I would rather take under 4.5 strikeouts at +115 rather than drink the juice at 5.5 (-158) at DraftKings, especially since Nelson has four strikeouts or fewer in four of his last six starts.

Odds Comparison for Ryne Nelson Under 4.5 Strikeouts

Sportsbook	Odds
bet365	+115
Caesars	+115
BetMGM	+110
Hard Rock Bet	+105
DraftKings	5.5 (-158)

Robbie Ray Under 4.5 Strikeouts (+128) at DraftKings

Ray is having another solid season, this time in his first full year with the Giants, putting up a 3.68 ERA and 1.20 WHIP with 71 walks and 181 strikeouts in 177.2 innings.

Even though Ray has five or more strikeouts in seven of his last nine outings, I’m taking under 4.5 because of the +128 price at DraftKings. As with Nelson, I’d rather take a lower bar at better odds, since I don’t want to pay -160 juice on a strikeout prop.

Up next is a tough matchup on the road against the Dodgers. Not only is Los Angeles 10th in K% vs LHP, but they’re also 5th in K% at home. This team has a 125 wRC+ (1st) at Dodger Stadium, so we could see a shorter outing than usual for Ray here. With that in mind, ride with the under.

Odds Comparison for Robbie Ray Under 4.5 Strikeouts

Sportsbook	Odds
DraftKings	+128
FanDuel	+120
Fliff	+120
BetMGM	5.5 (-155)
Caesars	5.5 (-161)