Stolen base
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In baseball, a stolen base occurs when a runner advances to a base unaided by other actions and the official scorer rules that the advance should be credited to the action of the runner. The umpires determine whether the runner is safe or out at the next base, but the official scorer rules on the question of credit or blame for the advance under Rule 10 of the MLB's Official Rules.
The all-time stolen base leader, Rickey Henderson, steals third base in 1988.
Tim Locastro steals second base for the Oklahoma City Dodgers during a 2017 game
!["Abbot Nailing the First Steal Attempded [sic] on Swayne Field" 1909](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Abbot_Nailing_the_First_Steal_Attempted_on_Swayne_Field%2C_Attendance_12%2C000%2C_Toledo_O._-_DPLA_-_ba2394a7f96a698bd750c95a6530012a_%28page_1%29.jpg/500px-Abbot_Nailing_the_First_Steal_Attempted_on_Swayne_Field%2C_Attendance_12%2C000%2C_Toledo_O._-_DPLA_-_ba2394a7f96a698bd750c95a6530012a_%28page_1%29.jpg)
"Abbot Nailing the First Steal Attempded [sic] on Swayne Field" 1909
Lastings Milledge steals a base.
Base running
Videos
In baseball, base running is the act of running from base to base, performed by members of the team at bat.
Ichiro Suzuki rounds third base to run towards home plate
Pick-off attempt on runner (in red) at first base