Walk-off Home Run - Relevant Rules

Relevant Rules

The rules of baseball provide that:

• A batter is entitled to a home run only "when he shall have touched all bases legally." (Rule 6.09(d); also 7.05(a))
• A batter is out, on appeal, for failing to touch each base in order or for passing a preceding runner. In some cases, all runs that score are negated. (Rule 7.10 and 7.12)
• On a game-winning hit, a batter is credited for the full number of bases only if "the batter runs out his hit." (Rule 10.06(f))
• A game-winning home run is allowed to complete before the game ends, even if it puts the home team ahead by more than one run. (Rule 4.11(c), Exception; also 10.06(g))

The first point above was problematic in the 1976 American League Championship Series between the New York Yankees and the Kansas City Royals. The Yankees and Royals entered the bottom of the ninth inning of the decisive fifth game with the score tied 6-6; Mark Littell was the pitcher for Kansas City, and Chris Chambliss was the first batter for New York. Chambliss hit Littell's first pitch into the right field bleachers to win the game and the American League pennant for the Yankees. However, Yankees fans ran onto the field at Yankee Stadium to celebrate the victory, and prevented Chambliss from rounding the bases and touching home plate. Recognizing the impossibility of Chambliss successfully negotiating the sea of people who had been on the field, umpires later escorted Chambliss back out to home plate and watched as he touched it with his foot, thereby making the Yankees victory "official". (A comment to Rule 4.09(b) permits the umpires to award the run if fans prevent the runner from touching home plate.)

The third point above led to Robin Ventura's "Grand Slam Single" in the 1999 NLCS. In the bottom of the 15th inning, the New York Mets tied the score against the Atlanta Braves at 3–3. Ventura came to bat with the bases loaded, and hit a game winning grand slam to deep right. Roger Cedeño scored from third and John Olerud appeared to score from second, but Todd Pratt, on first base when Ventura hit the home run, went to second, then turned around and hugged Ventura as the rest of the team rushed onto the field. The official ruling was that because Ventura never advanced past first base, it was not a home run but a single, and thus only Cedeño's run counted, making the official final score 4–3.

The fourth point above was not a rule prior to 1920; instead, the game ended at the moment the winning run scored. This rule affected the scoring of 40 hits, from 1884 to 1918, that would now be scored as game-winning home runs.