Fernando Tatis Jr. hit a grand slam and both managers got mad at

Padres Daily: Fernando Tatis Jr.'s surprise steal and his swing shift; another big opportunity awaits - The San Diego Union-Tribune

With two hits and a stolen base, Fernando Tatis Jr. wraps up eventful series in Texas as Padres complete sweep - ESPN

Zach Gelb: Padres Fernando Tatis Jr. Did Nothing Wrong

If MLB's unwritten rules were worth following, they would be written down - Beyond the Box Score

Fernando Tatis Jr.'s Grand Slam and the Death of MLB's Unwritten Rules - The Ringer

Padres' Fernando Tatis Jr. dons custom cleats honoring dad

Fernando Tatis Jr. contract deal means the Padres are officially all in - The Washington Post

Tatis Hits Grand Slam as Mets Win Third in a Row - The New York Times

This Day in History: Fernando Tatis Sr. Hits Two Grand Slams in Same Inning! - Fastball

Dodgers News: Clayton Kershaw Not Surprised By Fernando Tatis Jr., Padres' Aggression

Sanchez hits a grand slam off struggling Flaherty as the Padres beat the Orioles 10-3

Baseball's unwritten rules are evolving - The Washington Post

Fernando Tatis Jr. in Trouble for Breaking Baseball's Unwritten Rules

Fernando Tatis Jr. hits 2-run homer as San Diego Padres beat Arizona Diamondbacks 4-0 San Diego News - Bally Sports