Sunday’s MLB Strikeout Props - Sept. 13

Will Gage Jump strike out more than 5.5 batters? Can Kumar Rocker surpass 3.5 strikeouts? See their odds and more strikeout prop odds for all pitchers in MLB play on Sept. 13, in the article below.

Today's MLB Strikeout Props

Seattle Mariners at Athletics

• Gage Jump (Athletics): Over/Under 5.5 Ks (Over +112, Under -142) | 2026 Stats: 5.6 strikeouts per game in 19 appearances

Texas Rangers at Arizona Diamondbacks

• Brandon Pfaadt (Diamondbacks): Over/Under 4.5 Ks (Over +116, Under -148) | 2026 Stats: 3 strikeouts per game in 26 appearances
• Kumar Rocker (Rangers): Over/Under 3.5 Ks (Over -128, Under +100) | 2026 Stats: 4.7 strikeouts per game in 27 appearances