Mitch Keller’s Missing Sinker Is Breaking His Pitch Mix

Mitch Keller turned in his best outing in weeks Tuesday night, but the results and underlying pitch mix still left Alex Stumpf with serious concerns. Keller allowed five runs, four earned, over 5⅓ innings with seven strikeouts, three walks and eight hard-hit balls. Alex breaks down why Keller’s disappearing sinker is hurting his sweeper, why a four-seam-heavy approach does not play the same at 92–93 mph and why this version of Keller feels less predictable than at any point since 2022. Read more from Alex at Book Rule Bucs: https://bookrulebucs.substack.com/ Use Promo Code NS930 for 30% off your first order at https://www.defer.coffee Use Promo Code NORTHSHORENINE for $20 off your first order at https://www.seatgeek.com LIKE and SUBSCRIBE with NOTIFICATIONS ON if you enjoyed the show! NS9 MERCH: https://northshorenine.myshopify.com ►Patreon: https://www.patreon.com/NorthShoreNine ►Website: https://www.northshorenine.com ►Twitter: https://www.twitter.com/northshorenine ►TikTok: https://www.tiktok.com/@northshorenine ►Instagram: https://www.instagram.com/northshorenine ►Facebook: https://www.facebook.com/northshorenine ►Discord: https://discord.gg/3HVYPg544m #pittsburghpirates Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.