![FOX Sports: MLB on X: "MLB will test rules in the Atlantic League beginning April 28, including: ◽️ a Designated Pinch Runner, not otherwise in the lineup and available to use at FOX Sports: MLB on X: "MLB will test rules in the Atlantic League beginning April 28, including: ◽️ a Designated Pinch Runner, not otherwise in the lineup and available to use at](https://pbs.twimg.com/media/FuA4FjaacAEAFKZ.jpg:large)
FOX Sports: MLB on X: "MLB will test rules in the Atlantic League beginning April 28, including: ◽️ a Designated Pinch Runner, not otherwise in the lineup and available to use at
![Regular Season Rules and Regulations Spotlight: Player Re-Entry, Special Pinch-Runner, Pitch Count, and Mandatory Play - Little League Regular Season Rules and Regulations Spotlight: Player Re-Entry, Special Pinch-Runner, Pitch Count, and Mandatory Play - Little League](https://res.cloudinary.com/little-league/image/upload/c_limit,dpr_auto,w_1536,q_auto,c_fill,g_face/v1581694694/bb-player-sliding-into-third-5e46bee6575f6.jpg)
Regular Season Rules and Regulations Spotlight: Player Re-Entry, Special Pinch-Runner, Pitch Count, and Mandatory Play - Little League
![Terrance Gore, Mr. Pinch Runner, Joins the Mets — College Baseball, MLB Draft, Prospects - Baseball America Terrance Gore, Mr. Pinch Runner, Joins the Mets — College Baseball, MLB Draft, Prospects - Baseball America](https://i0.wp.com/www.baseballamerica.com/wp-content/uploads/bba-media/ebkknhnk/terrance-gore-photo-by-daniel-shirey_mlb-photos-via-getty-images.jpg?fit=2700,1905&ssl=1)
Terrance Gore, Mr. Pinch Runner, Joins the Mets — College Baseball, MLB Draft, Prospects - Baseball America
![Talkin' Baseball on X: "MLB is testing a 'Designated Pinch Runner' in the Atlantic League this season that can be subbed in and out of the game at any time https://t.co/k7RhiCDcLB" / Talkin' Baseball on X: "MLB is testing a 'Designated Pinch Runner' in the Atlantic League this season that can be subbed in and out of the game at any time https://t.co/k7RhiCDcLB" /](https://pbs.twimg.com/media/FuA24o4XwAkkdZW.jpg)
Talkin' Baseball on X: "MLB is testing a 'Designated Pinch Runner' in the Atlantic League this season that can be subbed in and out of the game at any time https://t.co/k7RhiCDcLB" /
![MLB to test three more rule changes, including installing a designated pinch runner - The Boston Globe MLB to test three more rule changes, including installing a designated pinch runner - The Boston Globe](https://bostonglobe-prod.cdn.arcpublishing.com/resizer/U667C56Ve-5b3koAaV-fMC_B8Ec=/960x0/filters:focal(1410x1018:1420x1008)/cloudfront-us-east-1.images.arcpublishing.com/bostonglobe/KZFAK2AEZ7WMBVMRSJ76JF74LA.jpg)