![Runner on first,ground ball to second the runner on first never left the base. We threw to first to force the batter. Isn't the runner on first supposed to vacate the base? Runner on first,ground ball to second the runner on first never left the base. We threw to first to force the batter. Isn't the runner on first supposed to vacate the base?](https://www.theoleballgame.com/images/runner-on-firstground-ball-to-second-the-runner-on-first-never-left-the-base-we-threw-to-first-to-force-the-batter-isnt-the-runner-on-first-supposed-to-vacate-the-base-ken-21641859.jpg)
Runner on first,ground ball to second the runner on first never left the base. We threw to first to force the batter. Isn't the runner on first supposed to vacate the base?
![MLB finalizes 2020 rule changes, including universal DH; runner on second base to start extras - CBSSports.com MLB finalizes 2020 rule changes, including universal DH; runner on second base to start extras - CBSSports.com](https://sportshub.cbsistatic.com/i/r/2020/06/24/67ed27f0-c1bc-4fab-b0f1-02ef2c1b6926/thumbnail/1200x675/8e5c87913f58370b49534aab48b0dd63/runner-on-second.png)
MLB finalizes 2020 rule changes, including universal DH; runner on second base to start extras - CBSSports.com
![Baseball Infielder Tips: What to do with a Runner on Second Base | PRO TIPS by DICK'S Sporting Goods Baseball Infielder Tips: What to do with a Runner on Second Base | PRO TIPS by DICK'S Sporting Goods](https://dsgmedia.blob.core.windows.net/pub/2016/09/Runner-at-Second.jpg)
Baseball Infielder Tips: What to do with a Runner on Second Base | PRO TIPS by DICK'S Sporting Goods
![baseball, runner, first base line, running, athlete, game, sport, american, base, ballgame, helmet | Pikist baseball, runner, first base line, running, athlete, game, sport, american, base, ballgame, helmet | Pikist](https://p0.pikist.com/photos/125/1014/baseball-runner-first-base-line-running-athlete-game-sport-american-base.jpg)