![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://images2.minutemediacdn.com/image/upload/c_crop,w_4519,h_2541,x_0,y_27/c_fill,w_1440,ar_16:9,f_auto,q_auto,g_auto/images/GettyImages/mmsport/132/01h08aqx1c5d56mbg4n1.jpg)
Texas Rangers: How is Jack Leiter's development progressing?
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://www.si.com/.image/t_share/MTkwNzQ5NDM5MTIyNDgyODM0/rangers---leiter.jpg)
Rangers Top Pitching Jack Leiter Prospect Wraps August Up Strong - Sports Illustrated Texas Rangers News, Analysis and More
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://cloudfront-us-east-1.images.arcpublishing.com/dmn/6YHY4JNYNFA7DJ2UUVPP35YK2I.JPG)
Rangers prospect Jack Leiter unable to overcome error, walks against Midland
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://opengraph.githubassets.com/28cceaef0f1c809a33eb3d375e7a3be33991926bf17708221d5c806649791589/renattomartins/word-counter-with-python-and-map-reduce)
word-counter-with-python-and-map-reduce/result-sorted.csv at master · renattomartins/word-counter-with-python-and-map-reduce · GitHub
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://www.dallasnews.com/resizer/-GBLCGsLgNZsYswnVHqJyrTTU-k=/arc-anglerfish-arc2-prod-dmn/public/5ET6KJZBKJHUZMPPF6U6N6TTTI.jpg)
Grading last 10 Texas Rangers MLB drafts: Which class fails, which class stands out?
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://bloximages.newyork1.vip.townnews.com/decaturdaily.com/content/tncms/assets/v3/editorial/4/68/46807093-82c3-538c-85e3-0a1423772f08/62ae4fcfc2579.image.jpg?resize=722%2C500)
Jack Leiter learned 'Mental ABCs' from dad, Pro Sports
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://i.ytimg.com/vi/Aq4Bp_gJG1Y/mqdefault.jpg)
BrothersJudd Blog: April 2019 Archives
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://www.dallasnews.com/resizer/6RkBNw5qBdcyuXGwtr07NzZ7DZA=/arc-anglerfish-arc2-prod-dmn/public/L2QSEI6VFZFJTFHHFHNQ2WF6HI.JPG)
Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://cloudfront-us-east-1.images.arcpublishing.com/dmn/4ZAD7NOHORGABEVS7ZNGOYNO7E.jpg)
Don't let the hype around Jack Leiter's pro debut overshadow the Rangers' pitching prospect depth
![Rangers' Jack Leiter learned 'Mental ABCs' from Al Leiter's mistakes and greatness](https://www.dallasnews.com/resizer/ag8_OcU2kqeSZcipbBKOG6fK3Bc=/arc-anglerfish-arc2-prod-dmn/public/HGLYGJVFZFFUFE4RKV2EB3VL6E.jpg)
Grading last 10 Texas Rangers MLB drafts: Which class fails, which class stands out?