![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://www.si.com/.image/ar_1:1%2Cc_fill%2Ccs_srgb%2Cfl_progressive%2Cq_auto:good%2Cw_1200/MTc0NzY5MTc1NTEwNjU2Mzc4/fernando-tatis-jr-chris-woodward.jpg)
Padres' Fernando Tatís Jr. hits grand slam, Rangers' Chris
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://www.sportsnet.ca/wp-content/uploads/2020/08/Fernando-Tatis.jpg)
Myers hits slam, Tatis leads the way, Padres top Rangers
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://larrybrownsports.com/wp-content/uploads/2020/08/fernando-tatis-jr-600x367.jpg)
Fernando Tatis Jr. upset unwritten rules police with his grand slam
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://s.yimg.com/ny/api/res/1.2/zn3mflGbW4HW7M2jp_hSPA--/YXBwaWQ9aGlnaGxhbmRlcjt3PTY0MDtoPTQyNw--/https://media.zenfs.com/en/la_times_articles_853/3aa421d365bc226545abe0dd1f3f7a32)
Dave Roberts and Joe Maddon ponder unwritten rules after Fernando
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://www.washingtonpost.com/resizer/Zz5frLpMcB7NgorgQJZxnnqFX74=/arc-anglerfish-washpost-prod-washpost/public/4HF2QHSA4RG77PSDWCJUECBLTQ.jpg)
Fernando Tatis Jr. contract deal means the Padres are officially
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://www.yardbarker.com/media/4/0/4035423f5c350224c18b4f1c96666f1ad4797c5f/thumb_16x9/fernando-tatis-jr-upset-unwritten-rules-police.jpg?v=1)
Fernando Tatis Jr. upset unwritten rules police with his grand
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://1.bp.blogspot.com/-_aEjF6TZApg/Xzv-VzB2KnI/AAAAAAAAFa0/XdreG84SBLcAODc4mx93PWbXpugOVDqyQCLcBGAsYHQ/s1280/image.jpg)
Off The Baggy: Keep Your Unwritten Rules, Let the Kids Play
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://www.si.com/.image/t_share/MTc0Nzk1ODg2NzE3NTc2NTcw/unwrittenmlbrules.jpg)
Baseball's Unwritten Rules Are Trash, Let's Be Rid of Them
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://external-preview.redd.it/K1JYTSQ4d3xshn3--kT65jp0_VRTkbXu0r49c-fMauo.jpg?auto=webp&s=e0b06b1c045f5c8aa02c1b1c6b10493b295b2cd4)
Fernando Tatises and grand slams are iconic; Fernando Tatis Sr. is
![Fernando Tatis Jr. hit a grand slam and both managers got mad at him for breaking 'unwritten rules'](https://images2.minutemediacdn.com/image/upload/c_fill,w_1440,ar_16:9,f_auto,q_auto,g_auto/shape/cover/sport/https-3A-2F-2Fsouthsideshowdown-com-2Fwp-content-2Fuploads-2Fgetty-images-2F2017-2F07-2F1232957564-850x560-334366d0ba1eea92a8d4e69295a93c42.jpg)
White Sox: Defending Yermín Mercedes for breaking unwritten rules